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Alexander H Weiss

Professor, Physics
Last Updated: January 28, 2020
about me

Research Interests

Research Interests
Positron Spectroscopy of Surfaces

Teaching Interests

Teaching Interests
Electronics Mathematical Physics Surface Physics Positron Spectroscopy

Biography

Biography

Biographical Sketch: Alex Weiss Professor Weiss is currently a Distinguished Professor of Physics and the Chair of the Physics Department at the University of Texas at Arlington. Professor Weiss received his BS from the City College of New York in 1976. Weiss was a Math major at City when he was recruited, as a junior, to work the Ultra-fast Laser Lab of Prof. Robert Alfano. Upon graduation from City, Weiss went on to pursue a Ph.D. in physics from Brandeis University in 1983. His Ph.D. research resulted in the first measurement of Low Energy Positron Diffraction (the first ever measurement of diffraction of anti-matter from matter) and first measurements of the energy and angular distributions of low energy electrons from surfaces emitted as a result of positron bombardment. After receiving his Ph.D., Dr. Weiss was a post-doctoral researcher at Harvard University where he performed the first x-ray scattering measurements from liquid-gas Interfaces. Since joining the University of Texas at Arlington in 1984 his research has been focused on the development of advanced methods for the characterization of surfaces and thin films and the application of these methods in the study of the growth and stability of thin films and nano-structures. Weiss is the inventor of Positron annihilation induced Auger Electron Spectroscopy (PAES) and co-inventor of Auger-Auger coincidence spectroscopy. Research in the Weiss lab provided the first demonstration that PAES selectively probes the elemental content of the top-layer. He has applied positron beams in fundamental studies of the positron surface state, positron-core electron annihilation cross sections and positron induced secondary electron emission. His measurements of electron emission resulting from very low energy positron bombardment provided the first demonstration of a new mechanism for positron trapping at surfaces: Auger mediated quantum sticking. Current research in Prof. Weiss’ lab employs the positron beam based spectroscopies he developed to provide unique information regarding the nature of the surfaces of 2 dimensional materials and the internal surfaces of porous materials.

Education

Education

    • 1983 PhD in Physics
      Brandeis University, 1983
    • 1976 BS in Mathematics
      CUNY The City College of NY, 1976

Appointments

Appointments

    • Sept 1982 to Aug 1984 Post Doctoral Researcher
      Department of Applied Science, Harvard University (Cambridge, MA, United States)

Memberships

    • Jan 1980 to Present American Physical Society
      Member at Large of the Executive Committee of the Texas Section

Awards and Honors

    • Apr  2006 Academy of Distinguished Scholars sponsored by The University of Texas at Arlington
    • Apr  2003 Distinguished Record of Research sponsored by The University of Texas at Arlington

Support & Funding

Support & Funding

This data is entered manually by the author of the profile and may duplicate data in the Sponsored Projects section.
    • Past to Present Annihilation Induced Gamma and Auger Spectroscopy for Chemical Analysis of Surfaces sponsored by  - $
      Alexander Weiss (Funded)
    • June 2018 to May 2021 New Method for the Chemical Characterization of the Internal Surfaces of Porous Materials sponsored by  - $195000
      Alexander Weiss (Funded)
    • Sept 2016 to Aug 2020 Addressing the National Need for the Training of Physics Ph.D.'s at the University of Texas at Arlington sponsored by  - $593616
      (Funded)
    • Sept 2015 to May 2018 Positron Spectrosopy of 2-D and Nanostructed Materials sponsored by  - $75000
      (Funded)
    • Sept 2013 to Aug 2017 MRI:Development of an Advanced Positron Beam System for Annihilitaion Spectroscopies of Surfaces, Interfaces and Nano sponsored by  - $640608
      (Funded)

Publications

      2019
      • Journal Article
        Measurement of the full electron spectrum associated with the Ag N3VV Auger transitions: Evidence for the contribution of multi-electron Auger processes
        [Joglekar, PV, Gladen, RW, Chirayath, VA, Fairchild, AJ , Kalaskar, S, Shastry, K, Dong, Q, Hulbert, SL, Bartynski, RA, Wener, WS. M., Weiss, AH]. Journal of Electron Spectroscopy and Related Phenomena. 235, 16-22. DOI http://dx.doi.org/ttps://doi.org/10.1016/j.elspec.2019.06.006
      2017
      • Journal Article
        Auger electron emission initiated by the creation of valence-band holes in graphene by positron annihilation
        [Chirayath, Varghese Anto, Callewaert, V., Fairchild, A.J., Chrysler, M.D., Gladen, R.W., Mcdonald, A.D., Imam, S.K., Shastry, K., Koymen, AliR, Saniz, R., Barbiellini, B., Rajeshwar, Krishnan, Partoens, B., Weiss, AlexanderH]. Nature Communications. 8, DOI http://dx.doi.org/10.1038/ncomms16116
      2016
      • Journal Article
        Positron surface state as a spectroscopic probe for characterizing surfaces of topological insulator materials
        [Callewaert, Vincent, Shastry, K., Saniz, Rolando, Makkonen, Ilja, Barbiellini, Bernardo, Assaf, BadihA., Heiman, Donald, Moodera, JagadeeshS., Partoens, Bart, Bansil, Arun, Weiss, AlexanderH]. 94(11), DOI http://dx.doi.org/10.1103/PhysRevB.94.115411
      • Journal Article
        Time of flight spectrometer for background-free positron annihilation induced Auger electron spectroscopy
        [, Shastry, K., Anto, C.V., Joglekar, P.V., Nadesalingam, M.P., Xie, S., Jiang, N., Weiss, AlexanderH]. Review of Scientific Instruments. 87(3), DOI http://dx.doi.org/10.1063/1.4943858
      2014
      • Journal Article
        Luminescence of La0.2Y1.8O3 nanostructured scintillators
        [Chen, Wei, Tu, Haiqing, Sahi, Sunil, Mao, Defeng, Kenarangui, Rasool, Luo, Junming, Jin, Peng, Liu, Shuman, Ma, Lun, Brandt, AndrewG, Weiss, Alex]. Optics Letters. 39(19), 5705-5708. DOI http://dx.doi.org/10.1364/OL.39.005705
      • Journal Article
        Luminescence of La0.2Y1.8O3 nanostructured scintillators
        [Chen, Wei, Tu, Haiqing, Sahi, Sunil, Mao, Defeng, Kenarangui, Rasool, Luo, Junming, Jin, Peng, Liu, Shuman, Ma, Lun, Brandt, AndrewG, Weiss, Alex]. Optics Letters. 39(19), 5705-5708. DOI http://dx.doi.org/10.1364/OL.39.005705
      • Journal Article
        Measurement of the background in Auger-photoemission coincidence spectra (APECS) associated with inelastic or multi-electron valence, band photoemission processes
        [Satyal, S., Joglekar, P.V., Shastry, K., Kalaskar, S., Dong, Q., Hulbert, S.L., Bartynski, R.A., Weiss, AlexanderH]. Journal of Electron Spectroscopy and Related Phenomena. 195, 66-70. DOI http://dx.doi.org/10.1016/j.elspec.2014.05.010
      2013
      • Journal Article
        Angle-resolved energy distribution of re-emitted positrons from a W(100) single crystal
        [Sudarshan, K., Samarin, S.N., Guagliardo, P., Petrov, V.N., Weiss, AlexanderH, Williams, Jessica]. 87(8), DOI http://dx.doi.org/10.1103/PhysRevB.87.085418
      • Journal Article
        Influence of surface conditions on thermal positron reemission spectra from W(100)
        [Sudarshan, K., Wilkie, P.J., Samarin, S.N., Guagliardo, P., Petrov, V.N., Weiss, AlexanderH, Williams, Jessica]. Applied Physics. A, Materials Science & Processing. 113(3), 633-639. DOI http://dx.doi.org/10.1007/s00339-013-7864-3
      2011
      • Journal Article
        Predominance of multielectron processes contributing to the intrinsic spectra of low-energy Auger transitions in copper and gold
        [Mukherjee, Soma, Shastry, K., Weiss, AlexanderH]. 84(15), DOI http://dx.doi.org/10.1103/PhysRevB.84.155109
      2010
      • Journal Article
        Auger-Mediated Sticking of Positrons to Surfaces: Evidence for a Single-Step Transition from a Scattering State to a Surface Image Potential Bound State
        [Mukherjee, Soma, Nadesalingam, M.P., Guagliardo, P., Sergeant, A.D., Barbiellini, B., Williams, Jessica, Fazleev, N.G., Weiss, AlexanderH]. Physical Review Letters. 104(24), DOI http://dx.doi.org/10.1103/PhysRevLett.104.247403
      • Journal Article
        Oxidation and thermal reduction of the Cu(100) surface as studied using positron annihilation induced Auger electron spectroscopy (PAES)
        [Fazleev, N.G., Nadesalingam, M.P., Maddox, W., Mukherjee, Soma, Rajeshwar, Krishnan, Weiss, AlexanderH]. Surface Science. 604(1), 32-37. DOI http://dx.doi.org/10.1016/j.susc.2009.10.016
      2008
      • Journal Article
        Secondary electron spectra of gold under bombardment by very low-energy positrons
        [Mukherjee, Soma, Nadesalingam, M.P., Guagliardo, Paul, Sergeant, A.D., Williams, Jessica, Weiss, AlexanderH]. Applied Surface Science. 255(1), 223-226. DOI http://dx.doi.org/10.1016/j.apsusc.2008.05.300
      • Journal Article
        Direct evidence for dynamic broadening of the energy spectra associated with the later steps of an Auger cascade
        [Sundaramoorthy, R., Weiss, AlexanderH, Hulbert, S.L., Bartynski, R.A.]. Physical Review Letters. 101(12), DOI http://dx.doi.org/10.1103/PhysRevLett.101.127601
      2007
      • Journal Article
        Effect of vacuum annealing on the surface chemistry of electrodeposited copper (I) oxide layers as probed by positron annihilation induced auger electron spectroscopy
        [Nadesalingam, MP, Mukherjee, S, Somasundaram, S, Chenthamarakshan, CR, de Tacconi, NormaR, Rajeshwar, Krishnan, Weiss, AH]. 23(4), 1830--1834. "American Chemical Society".
      • Journal Article
        Modeling of the energy spectra of individual steps of the L23→ M2, 3M2, 3→ M2, 3VV→ VVVV cascade chain in MnO
        [Weiss, AH, Sundaramoorthy, R, Hulbert, SL, Bartynski, RA]. Journal of Electron Spectroscopy and Related Phenomena. 161(1-3), 160--163. "Elsevier".
      • Journal Article
        Positron annihilation induced Auger and gamma spectroscopies of surfaces
        [Weiss, AH, Fazleev, NG, Nadesalingam, MP, Mukherjee, S, Xie, S, Zhu, J, Davis, BR]. 76(2), 285--290. "Pergamon".
      2006
      • Journal Article
        Gamma-ray spectra resulting from the annihilation of positrons with selected core levels of Cu, Ag, and Au
        [Kim, S, Eshed, A, Goktepeli, S, Sterne, PA, Koymen, AR, Chen, WC, Weiss, AH]. 73(1), DOI http://dx.doi.org/10.1103/PhysRevB.73.014114
      • Journal Article
        Positron trapping at quantum-dot-like particles on metal surfaces
        [Fazleev, NG, Fry, JL, Nadesalingam, MP, Weiss, AH]. Applied Surface Science. 252(9), 3327--3332. "Elsevier".
      2005
      • Journal Article
        Stability of Se passivation layers on Si(001) surfaces characterized by time-of-flight positron annihilation induced Auger electron spectroscopy
        [Zhu, JG, Nadesalingam, MP, Weiss, AH, Tao, M]. Journal of Applied Physics. 97(10), DOI http://dx.doi.org/10.1063/1.1897488
      2004
      • Journal Article
        Surface states and annihilation characteristics of positrons trapped at the (100) and (111) surfaces of silicon
        [Fazleev, NG, Fry, JL, Weiss, AH]. 70(16), DOI http://dx.doi.org/10.1103/PhysRevB.70.165309
      2003
      • Journal Article
        Alternative pathways to antimatter containment
        [Rejcek, JM, Browder, MK, Fry, JL, Koymen, A, Weiss, AH]. 68(3-4), 655--661. "Pergamon".
      • Journal Article
        Giant Coster-Kronig Transitions and Intrinsic Line Shapes of the Anomalous Pd M 45 V V Auger Spectrum of P d/A g (100) Dilute Surface Alloys
        [Arena, DA, Bartynski, RA, Nayak, RA, Weiss, AH, Hulbert, SL, Weinert, M]. Physical Review Letters. 91(17), 176403. "American Physical Society".
      • Journal Article
        Giant Coster-Kronig transitions and intrinsic line shapes of the anomalous Pd M45VV Auger spectrum of Pd/Ag(100) dilute surface alloys
        [Arena, DA, Bartynski, RA, Nayak, RA, Weiss, AH, Hulbert, SL, Weinert, M]. Physical Review Letters. 91(17), DOI http://dx.doi.org/10.1103/PhysRevLett.91.176403
      • Journal Article
        Positron-annihilation-induced Auger electron spectroscopy studies of the (100) and (111) surfaces of silicon
        [Fazleev, NG, Kim, J, Fry, JL, Weiss, AH]. 68(24), DOI http://dx.doi.org/10.1103/PhysRevB.68.245307
      • Journal Article
        Studies of the Auger spectrum from the Si(111) surface using positron annihilation induced Auger electron spectroscopy
        [Fazleev, NG, Fry, JL, Starnes, S, Weiss, AH]. 68(3-4), 613-617. DOI http://dx.doi.org/10.1016/S0969-806X(03)00242-1
      • Journal Article
        Study of ultra-thin Al films deposited on GaAs(100) using positron annihilation induced auger electron spectroscopy and electron induced Auger electron spectroscopy
        [Chen, WC, Fazleev, NG, Weiss, AH]. 68(3-4), 619-621. DOI http://dx.doi.org/10.1016/S0969-806X(03)00243-3
      2002
      • Journal Article
        Experimental determination of positron-related surface characteristics of 6H-SiC
        [Nangia, A, Kim, JH, Weiss, AH, Brauer, G]. Journal of Applied Physics. 91(5), 2818--2826. "AIP".
      • Journal Article
        Gamma spectra resulting from the annihilation of positrons with electrons in a single core level
        [Eshed, A, Goktepeli, S, Koymen, AR, Kim, S, Chen, WC, O'Kelly, DJ, Sterne, PA, Weiss, AH]. Physical Review Letters. 89(7), DOI http://dx.doi.org/10.1103/PhysRevLett.89.075503
      2001
      • Journal Article
        Line shape of the Ag M 4, 5 VV Auger spectra measured by Auger-photoelectron coincidence spectroscopy
        [Arena, DA, Bartynski, RA, Nayak, RA, Weiss, AH, Hulbert, SL]. 63(15), 155102. "American Physical Society".
      • Journal Article
        Low-energy positrons at the Si(100)-2x1 surface with adsorbed hydrogen and oxygen
        MATERIALS SCIENCE FORUM
        [Fazleev, NG, Fry, JL, Weiss, AH]. 363-3, 451-453.
      • Journal Article
        Stability of an ultra-thin Fe film on a Cu (1 0 0) surface studied by positron-annihilation induced Auger electron spectroscopy (PAES)
        [Kim, JH, Lee, KH, Yang, G, Koymen, AR, Weiss, AH]. Applied Surface Science. 173(3-4), 203--207. "North-Holland".
      • Journal Article
        Stability of an ultra-thin Fe film on a Cu(100) surface studied by positron-annihilation induced Auger electron spectroscopy (PAES)
        [Kim, JH, Lee, KH, Yang, G, Koymen, AR, Weiss, AH]. Applied Surface Science. 173(3-4), 203-207.
      • Journal Article
        Study of the growth and stability of ultra-thin films of Au deposited on Si (1 0 0) and Si (1 1 1)
        [Kim, JH, Yang, G, Yang, S, Weiss, AH]. Surface Science. 475(1-3), 37--46. "North-Holland".
      2000
      • Journal Article
        Positron interactions with overlayers of oxygen on GaAs (100)
        [Kim, JH, Nangia, A, Weiss, AH]. 58(5-6), 655--658. "Pergamon".
      • Journal Article
        Positrons as probes of Si (100) surface with adsorbed hydrogen and oxygen
        [Fazleev, NG, Fry, JL, Weiss, AH]. 58(5-6), 659--665. "Pergamon".
      • Journal Article
        Studies of the Auger spectrum from the (100) surface of GaAs using positron annihilation induced Auger electron spectroscopy
        [Fazleev, NG, Starnes, S, Weiss, AH, Fry, JL]. 58(5-6), 667--673. "Pergamon".
      • Journal Article
        Study of thin film growth of Fe/Cu (100) andAu/Si (100)
        [Kim, JH, Lee, KH, Yang, G, Koymen, AR, Weiss, AH]. 171(1-2), 231--235. "North-Holland".
      • Journal Article
        The effect of adsorbed atomic hydrogen on the growth of ultrathin silicon films on Ge (100) studied by positron-annihilation-induced Auger electron spectroscopy (PAES)
        [Kim, JH, Weiss, AH]. Surface Science. 460(1-3), 129--135. "North-Holland".
      1998
      • Journal Article
        Positron states and annihilation characteristics at the (100),(110), and (111) surfaces of alkali metals
        [Fazleev, NG, Fry, JL, Weiss, AH]. 57(19), 12506. "APS".
      • Journal Article
        Study of the adsorption of hydrogen and oxygen on Si (100) using positron-annihilation induced Auger electron spectroscopy (PAES)
        [Kim, JH, Yang, G, Weiss, AH]. Surface Science. 396(1-3), 388--393. "North-Holland".
      1997
      • Journal Article
        Annihilation of positrons trapped at the (100) and (111) surfaces of Si
        [Fazleev, NG, Kuttler, KH, Fry, JL, Weiss, AH]. Applied Surface Science. 116, 304--310. "Elsevier".
      • Journal Article
        Background-free Auger line shape of Ag N2, 3VV measured with positron annihilation induced Auger electron spectroscopy
        [Jung, E, Zhou, HQ, Kim, JH, Starnes, S, Venkataraman, R, Weiss, AH]. Applied Surface Science. 116, 318--323. "North-Holland".
      • Journal Article
        Energy spectra of electrons and positrons emitted from surfaces as a result of low energy positron bombardment
        [Weiss, Alex, Jung, E, Kim, JH, Nangia, A, Venkataraman, R, Starnes, S, Brauer, G]. Applied Surface Science. 116, 311--317. "Elsevier".
      • Journal Article
        High-resolution positron-annihilation-induced Auger electron spectrometer
        [Yang, S, Zhou, HQ, Jung, E, Weiss, AH, Citrin, PH]. Review of Scientific Instruments. 68(10), 3893--3897. "AIP".
      • Journal Article
        Positron annihilation induced Auger electron spectroscopy (PAES) study of the structure of Si/H/Ge (100) interfaces
        [Kim, JH, Wheeler, S, Nangia, A, Jung, E, Weiss, AH]. Applied Surface Science. 116, 324--329. "Elsevier".
      • Journal Article
        The study of secondary electrons and redistributed primaries (electrons and positrons) from Ge(100) surface utilizing the electron and the positron beams
        MATERIALS SCIENCE FORUM
        [Jung, E, Venkataraman, Ramgopal, Starnes, S, Weiss, AH]. 255-2, 708-710.
      1996
      • Journal Article
        Application of positron annihilation induced Auger electron spectroscopy to the study of surface chemistry
        [Weiss, AH, Yang, G, Kim, JH, Nangia, A, Fazleev, NG]. Journal of Radioanalytical and Nuclear Chemistry. 210(2), 423--433. "Kluwer Academic Publishers".
      • Journal Article
        Depth profile analysis of surfaces produced by annealing ultra-thin films of Au deposited on Si (100)
        [Yang, G, Kim, JH, Yang, S, Weiss, AH]. Surface Science. 367(1), 45--55. "Elsevier".
      1995
      • Journal Article
        Adsorption site identification for oxygen molecules on AuSi (100) by positron annihilation induced Auger electron spectroscopy (PAES)
        [Yang, G, Kim, JH, Yang, S, Weiss, AH]. Applied Surface Science. 85, 77--81. "North-Holland".
      • Journal Article
        Annihilation of positrons trapped at the alkali-metal-covered transition-metal surface
        [Fazleev, NG, Fry, JL, Kuttler, KH, Koymen, AR, Weiss, AH]. 52(7), 5351. "APS".
      • Journal Article
        Auger line shape measurements using positron annihilation induced Auger electron spectroscopy
        [Weiss, AH, Yang, S, Zhou, HQ, Jung, E, Wheeler, S]. Journal of Electron Spectroscopy and Related Phenomena. 72, 305--309. "Elsevier".
      • Journal Article
        Method for the measurement of positron affinities and positron work functions suitable for both positive and negative work function materials
        [Weiss, AlexH, Yang, S, Zhou, HQ, Jung, E, Koymen, AR, Naidu, S, Brauer, Gerhard, Puska, MarttiJ]. Applied Surface Science. 85, 82--86. "Elsevier".
      • Journal Article
        Study of positron surface states on the alkali-metal-covered transition-metal surface
        [Fazleev, NG, Fry, JL, Kuttler, K, Koymen, AR, Weiss, AH]. Applied Surface Science. 85, 26--32. "Elsevier".
      • Journal Article
        Theoretical study of the positron surface state at an alkali-metal surface
        [Fazleev, NG, Fry, JL, Kuttler, K, Weiss, AH]. Applied Surface Science. 85, 22--25. "Elsevier".
      1994
      • Journal Article
        Application of positron spectroscopy to materials science
        [Hulett, LD, Brown, BL, Howell, RichardH, Jones, PL, Lynn, KelvinG, Okada, Sohei, Smedskjaer, LC, West, RN, Gonzalez, R, Denison, AL, others]. 3, 17.
      • Journal Article
        Positron annihilation induced Auger electron spectroscopy studies of submonolayer Au on Cu (100): Direct evidence for positron localization at sites containing Au atoms
        [Lee, KH, Yang, Gimo, Koymen, AR, Jensen, KO, Weiss, AH]. Physical Review Letters. 72(12), 1866. "American Physical Society".
      • Journal Article
        Positron-annihilation-induced Auger-electron-spectroscopy studies of properties of an alkali-metal overlayer on the Cu (100) surface
        [Fazleev, NG, Fry, JL, Kaiser, JH, Koymen, AR, Lee, KH, Niedzwiecki, TD, Weiss, AH]. 49(15), 10577. "APS".
      • Journal Article
        Slow positron beam techniques for solids and surfaces. Fifth international workshop
        [Ottewitte, Eric, Weiss, AlexH].
      • Journal Article
        Study of the structure of the Rh/Ag surface using positron annihilation induced Auger electron spectroscopy
        [Yang, G, Yang, S, Kim, JH, Lee, KH, Koymen, AR, Mulhollan, GA, Weiss, AH]. 12(2), 411--417. "AVS".
      • Journal Article
        Summary of the fifth international workshop on slow positron beam techniques for solids and surfaces
        [Weiss, AH, Ottewitte, EH, Augenstein, BW, Denison, AB, Ghosh, VJ, Jacobsen, FM, Kristiakov\'a, K, Lynn, KG, Nieminen, RM, Ritley, KA, others]. 44, 665--670.
      1993
      • Journal Article
        Temperature-dependent top-layer composition of ultrathin Pd films on Cu (100)
        [Koymen, AR, Lee, KH, Yang, G, Jensen, KO, Weiss, AH]. 48(3), 2020. "APS".
      1992
      • Journal Article
        Measurement of positron annihilation induced Auger electron emission from Fe, Cu, Pd, and Au
        [Lee, KH, Koymen, AliR, Mehl, David, Jensen, KO, Weiss, Alex]. Surface Science. 264(1-2), 127--134. "North-Holland".
      • Journal Article
        POSITRON STATES ON THE CS/CU(100) SURFACE
        [KOYMEN, AR, LEE, KH, MEHL, D, Weiss, AlexanderH, JENSEN, KO]. Physical Review Letters. 68(15), 2378-2381.
      1991
      • Journal Article
        MEASUREMENT OF THE POSITRON WORK-FUNCTIONS OF POLYCRYSTALLINE FE, MO, NI, PT, TI, AND V
        [JIBALY, M, Weiss, AlexanderH, KOYMEN, AR, MEHL, D, STIBOREK, L, LEI, C]. 44(22), 12166-12171.
      • Journal Article
        Positron annihilation induced Auger electron spetroscopy and its implementation at accelerator based low energy positron factories
        [Weiss, Alex, K\"oymen, Ali R, Mehl, David, Lee, Kuen-Ho, Yang, Gimo, Jensen, Kjeld]. 56, 591--594. "Elsevier".
      • Journal Article
        POSITRON-ANNIHILATION INDUCED AUGER-ELECTRON SPECTROSCOPY AND ITS IMPLEMENTATION AT ACCELERATOR BASED LOW-ENERGY POSITRON FACTORIES
        [Weiss, AlexanderH, KOYMEN, AR, MEHL, D, LEE, KH, YANG, G, JENSEN, K]. Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions With Materials and Atoms. 56-7, 591-594.
      • Journal Article
        RARE-GAS MODERATED ELECTROSTATIC POSITRON BEAM
        [MASSOUMI, GR, HOZHABRI, N, LENNARD, WN, SCHULTZ, PJ, BAERT, SF, JORCH, HH, WEISS, AH]. Review of Scientific Instruments. 62(6), 1460-1463.
      1990
      • Journal Article
        EFFICIENT ENERGY SPECTROMETER FOR CHARGED-PARTICLE DETECTION IN SURFACE STUDIES
        [MAYER, R, BECKER, D, SCHWAB, A, Weiss, AlexanderH]. Review of Scientific Instruments. 61(1), 42-48.
      • Journal Article
        Elimination of the secondary electron background in Auger electron spectroscopy using low energy positron excitation
        [Weiss, Alex, Mehl, David, Koymen, AliR, Lee, KH, Lei, Chun]. 8(3), 2517--2520. "AVS".
      • Journal Article
        Sensitivity of positron-annihilation-induced auger-electron spectroscopy to the top surface layer
        [Mehl, David, K\"oymen, AR, Jensen, KjeldO, Gotwald, Fred, Weiss, Alex]. 41(1), 799. "APS".
      • Journal Article
        Temperature dependence of low-energy positron-induced Auger-electron emission: Evidence for high surface sensitivity
        [Mayer, R, Schwab, A, Weiss, Alex]. 42(4), 1881. "American Physical Society".
      • Journal Article
        Theoretical study of the application of positron-induced Auger-electron spectroscopy
        [Jensen, KjeldO, Weiss, Alex]. 41(7), 3928. "American Physical Society".
      1989
      • Journal Article
        Anodic electrosynthesis of cadmium telluride (CdTe) thin films
        [Ham, Dong, Mishra, KamalK, Weiss, Alex, Rajeshwar, Krishnan]. 1(6), 619--625. "American Chemical Society".
      • Journal Article
        Apparatus for positron annihilation-induced Auger electron spectroscopy
        [Lei, Chun, Mehl, David, Koymen, AR, Gotwald, Fred, Jibaly, M, Weiss, Alex]. Review of Scientific Instruments. 60(12), 3656--3660. "AIP".
      • Journal Article
        Comparison of energy distributions of positron-and electron-induced secondary electrons: Implications for slow positron emission mechanisms
        [Mayer, R, Gramsch, E, Weiss, A]. 40(16), 11287. "APS".
      • Journal Article
        Electrodeposition and characterization of SnS thin films
        [Mishra, K, Rajeshwar, K, Weiss, Alex, Murley, M, Engelken, RobertD, Slayton, Mike, McCloud, HalE]. Journal of the Electrochemical Society. 136(7), 1915--1923. "The Electrochemical Society".
      1988
      • Journal Article
        Auger-electron emission resulting from the annihilation of core electrons with low-energy positrons
        [Weiss, Alex, Mayer, Rulon, Jibaly, Mohammed, Lei, Chun, Mehl, David, Lynn, KG]. Physical Review Letters. 61(19), 2245. "American Physical Society".
      • Journal Article
        Comparative study of secondary-electron emission from positron and electron bombardment of Ni, Si, and MgO
        [Mayer, Rulon, Weiss, Alex]. 38(16), 11927. "APS".
      • Journal Article
        ELECTROCATALYTIC MODIFICATION OF INDIUM TIN OXIDE ELECTRODE SURFACES - SURFACE-ANALYSES AND ELECTROCHEMISTRY
        [HO, SI, WHELAN, DP, Rajeshwar, Krishnan, Weiss, AlexanderH, MURLEY, M, REID, R]. Journal of the Electrochemical Society. 135(6), 1452-1457.
      1987
      • Journal Article
        SMECTIC LAYERING AT THE FREE-SURFACE OF LIQUID-CRYSTALS IN THE NEMATIC PHASE - X-RAY REFLECTIVITY
        [PERSHAN, PS, BRASLAU, A, WEISS, AH, ALSNIELSEN, J]. Physical Review. A. 35(11), 4800-4813.
      1986
      • Journal Article
        NOVEL X-RAY DIFFRACTOMETER FOR LIQUID SURFACE STUDIES
        [WEISS, AH, DEUTSCH, M, BRASLAU, A, OCKO, BM, PERSHAN, PS]. Review of Scientific Instruments. 57(10), 2554-2559.
      1985
      • Journal Article
        Structural relaxation of amorphous Pd 82 Si 18: X-ray measurements, electrical-resistivity measurements, and a comparison using the Ziman theory
        [Chason, E, Greer, AL, Kelton, KF, Pershan, PeterS, Sorensen, LB, Spaepen, F, Weiss, AH]. 32(6), 3399. "American Physical Society".
      • Journal Article
        STRUCTURAL RELAXATION OF AMORPHOUS PD82SI18 - X-RAY MEASUREMENTS, ELECTRICAL-RESISTIVITY MEASUREMENTS, AND A COMPARISON USING THE ZIMAN THEORY
        [CHASON, E, GREER, AL, KELTON, KF, PERSHAN, PS, SORENSEN, LB, SPAEPEN, F, WEISS, AH]. 32(6), 3399-3408.
      • Journal Article
        SURFACE-ROUGHNESS OF WATER MEASURED BY X-RAY REFLECTIVITY
        [BRASLAU, A, DEUTSCH, M, PERSHAN, PS, WEISS, AH, ALSNIELSEN, J, BOHR, J]. Physical Review Letters. 54(2), 114-117.
      1983
      • Journal Article
        LOW-ENERGY POSITRON AND ELECTRON-DIFFRACTION FROM CU(100) AND CU(111)
        [WEISS, AH, ROSENBERG, IJ, CANTER, KF, DUKE, CB, PATON, A]. 27(2), 867-881.
      1980
      • Journal Article
        LOW-ENERGY POSITRON DIFFRACTION FROM A CU(111) SURFACE
        [ROSENBERG, IJ, WEISS, AH, CANTER, KF]. Physical Review Letters. 44(17), 1139-1142.
      • Journal Article
        POSITRONIUM EMISSION FROM METAL-SURFACES
        [ROSENBERG, IJ, WEISS, AH, CANTER, KF]. 17(1), 253-255.
      • Journal Article
        THEORY VERSUS EXPERIMENT IN LOW-ENERGY POSITRON DIFFRACTION BY CU(111)
        [JONA, F, JEPSEN, DW, MARCUS, PM, ROSENBERG, IJ, WEISS, AH, CANTER, KF]. Solid State Communications. 36(11), 957-959.
      Journal Article (In Process)
      • Revising to Resubmit
        Digital methods for the coincident measurement of the energies of positron-induced electrons and Doppler-shifted annihilation gamma quanta
        [Gladen, RW]. Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment.
      2017
      • Conference Proceeding
        Investigation of graphene using low energy positron annihilation induced Doppler broadening spectroscopy
        Journal of Physics Conference Series
        [Chirayath, Varghese Anto, Chrysler, M.D., McDonald, A.D., Gladen, R.W., Fairchild, A.J., Koymen, AliR, Weiss, AlexanderH]. 791, DOI http://dx.doi.org/10.1088/1742-6596/791/1/012032
      • Conference Proceeding
        Low energy positron beam system for the investigation of 2D and porous materials
        Journal of Physics Conference Series
        [Chrysler, M.D., Chirayath, Varghese Anto, Mcdonald, A.D., Gladen, R.W., Fairchild, A.J., Koymen, AliR, Weiss, AlexanderH]. 791, DOI http://dx.doi.org/10.1088/1742-6596/791/1/012008
      • Conference Proceeding
        Modelling the line shape of very low energy peaks of positron beam induced secondary electrons measured using a time of flight spectrometer
        Journal of Physics Conference Series
        [Fairchild, A.J., Chirayath, Varghese Anto, Gladen, R.W., Chrysler, M.D., Koymen, AliR, Weiss, AlexanderH]. 791, DOI http://dx.doi.org/10.1088/1742-6596/791/1/012030
      • Conference Proceeding
        Positron induced electron emission from graphene
        Journal of Physics Conference Series
        [Chirayath, Varghese Anto, Gladen, R.W., Shastry, K., Chrysler, M.D., Fairchild, A.J., McDonald, A.D., Koymen, AliR, Barbiellini, B., Weiss, AlexanderH]. 791, DOI http://dx.doi.org/10.1088/1742-6596/791/1/012033
      • Conference Proceeding
        Time of flight spectra of electrons emitted from graphite after positron annihilation
        Journal of Physics Conference Series
        [Gladen, R.W., Chirayath, Varghese Anto, Chrysler, M.D., Mcdonald, A.D., Fairchild, A.J., Shastry, K., Koymen, AliR, Weiss, AlexanderH]. 791, DOI http://dx.doi.org/10.1088/1742-6596/791/1/012031
      2015
      • Conference Proceeding
        Evidence for a positron bound state on the surface of a topological insulator
        Journal of Physics Conference Series
        [Shastry, K., Weiss, AlexanderH, Barbiellini, B., Assaf, B.A., Lim, Z.H., Joglekar, P.V., Heiman, D.]. 618, DOI http://dx.doi.org/10.1088/1742-6596/618/1/012006
      2013
      • Conference Proceeding
        Measurement of the Positron Annihilation Induced Auger Electron Spectrum from Ag(100)
        Journal of Physics Conference Series
        [Joglekar, P., Shastry, K., Fazleev, N.G., Weiss, AlexanderH]. 443, DOI http://dx.doi.org/10.1088/1742-6596/443/1/012078
      • Conference Proceeding
        Measurement Of The Spectra Of Low Energy Electrons Resulting From Auger Transitions Induced By The Annihilation Of Low Energy Positrons Implanted At The Ag (100) Surface
        AIP Conference Proceedings
        [Shastry, Karthik, Joglekar, Prasad, Weiss, AlexanderH, Fazleev, N.G.]. 1525, 444-447. DOI http://dx.doi.org/10.1063/1.4802367
      • Conference Proceeding
        Positron Re-emission Studies from W (100)
        Journal of Physics Conference Series
        [Sudarshan, K., Petrov, V.N., Samarin, S.N., Guagliardo, P., Weiss, AlexanderH, Williams, Jessica]. 443, DOI http://dx.doi.org/10.1088/1742-6596/443/1/012070
      • Conference Proceeding
        Surface states and annihilation characteristics of positrons trapped at the oxidized Cu(100) surface
        Journal of Physics Conference Series
        [Fazleev, N.G., Weiss, AlexanderH]. 443, DOI http://dx.doi.org/10.1088/1742-6596/443/1/012038
      • Conference Proceeding
        Theoretical Studies Of Positron States And Annihilation Characteristics At The Oxidized Cu(100) Surface
        AIP Conference Proceedings
        [Fazleev, N.G., Weiss, AlexanderH]. 1525, 465-469. DOI http://dx.doi.org/10.1063/1.4802372
      2011
      • Conference Proceeding
        Positron Annihilation Induced Auger Electron Spectroscopic Studies Of Reconstructed Semiconductor Surfaces
        AIP Conference Proceedings
        [Fazleev, N.G., Reed, J.A., Starnes, S.G., Weiss, AlexanderH]. 1336, 493-496. DOI http://dx.doi.org/10.1063/1.3586148
      • Conference Proceeding
        Studies Of Oxidation And Thermal Reduction Of The Cu(100) Surface Using Positron Annihilation Induced Auger Electron Spectroscopy
        AIP Conference Proceedings
        [Fazleev, N.G., Nadesalingam, M.P., Maddox, W., Weiss, AlexanderH]. 1336, 487-492. DOI http://dx.doi.org/10.1063/1.3586147
      • Conference Proceeding
        Theoretical aspects of studies of oxide and semiconductor surfaces using low energy positrons
        Journal of Physics Conference Series
        [Fazleev, N.G., Maddox, W.B., Weiss, AlexanderH]. 262, DOI http://dx.doi.org/10.1088/1742-6596/262/1/012019
      2009
      • Conference Proceeding
        Positron states and annihilation characteristics at the reconstructed (100) and (111) surfaces of Si with adsorbed hydrogen and oxygen.
        APS Meeting Abstracts
        [Fazleev, NG, Maddox, WB, Weiss, AH].
      • Conference Proceeding
        Studies of Oxidation of the Cu(100) Surface Using Low Energy Positrons
        AIP Conference Proceedings
        [Fazleev, N.G., Maddox, W.B., Nadesalingam, M., Rajeshwar, Krishnan, Weiss, AlexanderH]. 1099, 952-955.
      • Conference Proceeding
        Studies of Positrons Trapped at Quantum-Dot Like Particles Embedded in Metal Surfaces
        AIP Conference Proceedings
        [Fazleev, N.G., Nadesalingam, M.P., Weiss, AlexanderH]. 1099, 956-959.
      • Conference Proceeding
        The Effects of Surface Reconstruction and Electron-Positron Correlation on the Annihilation Characteristics of Positrons Trapped at Semiconductor Surfaces
        AIP Conference Proceedings
        [Fazleev, N.G., Jung, E., Weiss, AlexanderH]. 1099, 932-935.
      2007
      • Conference Proceeding
        Study of cuprous oxide using time of flight positron annihilation induced Auger electron spectroscopy
        Physica Status Solidi C-Current Topics in Solid State Physics
        [Nadesalingam, M.P., Mukherjee, Soma, Somasundaram, S., Chenthamarakshan, C.R., De Tacconi, Norma R., Davis, BryanMicah, Rajeshwar, Krishnan, Weiss, AlexanderH]. 4(10), 3932-+. DOI http://dx.doi.org/10.1002/pssc.200675859
      2004
      • Conference Proceeding
        Search for positron trapping at quantum-dot like Cu nano particles on the surface of Fe using positron annihilation induced auger electron spectroscopy (PAES)
        Materials Science Forum
        [Nadesalingam, ManoriP, Kim, SeogKyu, Fazleev, NailG, Fry, JohnL, Nagai, Yasuyoshi, Hasegawa, Masuyuki, Weiss, AlexH]. 445, 156--158.
      2003
      • Conference Proceeding
        Studies of positron-surface interactions in semiconductors using positron annihilation induced auger electron spectroscopy
        AIP CONFERENCE PROCEEDINGS
        [Fazleev, NG, Fry, JL, Weiss, AH]. 680, 509-513.
      2001
      • Conference Proceeding
        Low energy positrons at semiconductor surfaces
        AIP CONFERENCE PROCEEDINGS
        [Fazleev, NG, Fry, JL, Weiss, AH]. 576, 753-756.
      • Conference Proceeding
        Positron annihilation induced Auger electron spectroscopy (PAES)
        Materials Science Forum
        [Weiss, AlexH]. 363, 537--541.
      1997
      • Conference Proceeding
        Enhanced Sensitivity to Defects at the TiO\_2 (110) Surface using Auger Photoelectron Coincidence Spectroscopy
        APS March Meeting Abstracts
        [Bartynski, RA, Siu, W-K, Namgia, A, Weiss, AH, Wu, Xilin, Hulbert, SL].
      • Conference Proceeding
        Measurement of positron work function, positronium fraction and PAES intensities from GaAs (100)
        Materials Science Forum
        [Kim, JH, Nangia, A, Jung, E, Weiss, AlexH]. 255, 638--640.
      • Conference Proceeding
        Positron states and annihilation characteristics at semiconductor surfaces
        Materials Science Forum
        [Fazleev, NG, Fry, JL, Weiss, AlexH]. 255, 145--149.
      1995
      • Conference Proceeding
        Apparatus for High Resolution Positron Annihilation Induced Auger Electron Spectroscopy
        Materials Science Forum
        [Zhou, HQ, Yang, S, Jung, ES, Weiss, AlexH]. 175, 255--260.
      • Conference Proceeding
        Auger Line Shape of M2, 3VV Measured with Positron Annihilation Induced Auger Electron Spectroscopy
        Materials Science Forum
        [Yang, S, Zhou, HQ, Jung, ES, Weiss, AlexH]. 175, 249--254.
      1994
      • Conference Proceeding
        Introduction; Success of the Technique
        Advanced Materials Research
        [Hulett, LD, Brown, BL, Howell, RichardH, Jones, PL, Lynn, KelvinG, Okada, Sohei, Smedskjaer, LC, West, RN, Gonzalez, R, Denison, AL, others]. 3, 1--18.
      • Conference Proceeding
        The temperature dependence of the atomic composition of the surface of Cu (100) after deposition of submonolayer films of Au
        AIP Conference Proceedings
        [Kim, JH, Yang, G, Yang, S, Lee, KH, Koymen, AR, Weiss, AH]. 303(1), 234--238.
      1992
      • Conference Proceeding
        Determination of the positron work functions of Cu (100) and polycrystalline Fe, Mo, Ni, Pt, Ti and V
        Materials Science Forum
        [Jibaly, M, Kellogg, EC, Weiss, A, Koymen, AR, Mehl, D, Stiborek, L]. 105, 1399--1402.
      • Conference Proceeding
        Positron annihilation induced Auger electron spectroscopy
        Solid State Phenomena
        [Weiss, AlexH]. 28, 317--340.
      • Conference Proceeding
        Temperature dependent top layer composition of Pd on Cu (100)
        Materials Science Forum
        [Koymen, AR, Lee, KH, Yang, G, Zhou, H, Weiss, AlexH]. 105, 1411--1414.
      1990
      • Conference Proceeding
        POSITRON-ANNIHILATION INDUCED AUGER-ELECTRON SPECTROSCOPY
        NASA CONFERENCE PUBLICATION
        [Weiss, AlexanderH, KOYMEN, AR, MEHL, D, JENSEN, KO, LEI, C, LEE, KH]. 3058, 289-291.
      1980
      • Conference Proceeding
        LOW-ENERGY POSITRON DIFFRACTION FROM CU(100)
        [WEISS, AH, CANTER, KF, ROSENBERG, IJ]. Bulletin of the American Physical Society. 25(3), 392-392.
      • Conference Proceeding
        LOW-ENERGY POSITRON DIFFRACTION FROM CU(111)
        [ROSENBERG, IJ, CANTER, KF, WEISS, AH]. Bulletin of the American Physical Society. 25(3), 391-392.
      2000
      • Book Chapter
        Surface science with positrons
        Positron beams and their applications
        [Weiss, AH, Coleman, PG]. 129--189.
      1997
      • Other
        Enhanced sensitivity to oxide surface defects using Auger-photoelectron coincidence spectroscopy
        [See, AK, Siu, WK, Bartynski, RA, Nangia, A, Weiss, AH, Hulbert, SL, Wu, X, Kao, CC]. Surface Science. 383(2-3), L735-L741.

Students Supervised

    • Dec 2014
      Karhik Shastry, (Physics)
      Evidence of a Positron Bound State on the Surface of a Topological Insulator Bi2Te2Se
    • Apr 2014
      Prasad Joglekar, (Physics)
      EXPERIMENTAL STUDIES OF FUNDAMENTAL ASPECTS OF AUGER EMISSION PROCESS IN Cu (100) AND Ag (100)
    • Dec 2011
      Fnu Ameena, (Physics)
      Defect Studies in P-Type Transparent Conducting Oxides
    • 2010
      Karhik Shastry, (Physics)
      First Measurements of the Low Energy Taill ( LET) down to 0eV using Auger Photoelectron Conincidence Spectroscopy( APECS) in Ag (100) and cu(100)
    • May 2007
      Manori Nadesalingam, (Physics)
      Study of Oxide Surfaces Using Time of Flight Positron Annihilation Induced Auger Electron Spectroscopy
    • May 1999
      Neng Jiang, (Physics)
      Design and Modeling of a Positron Annihilation Induced Auger Electron Spectrometer with Time-Of-Flight Energy Analyzer
    • Dec 1997
      Jae Hong Kim, (Physics)
      Study of the Groth of Adsorbed Gas Layers and Ultra-Thin Films Deposited on Si, Ge and GaAs Surfaces.
    • Dec 1997
      Ranjani Venkataraman, (Physics)
      Study of the Energy Distribution of Secondary Electrons and Redistributed Primary Particles From A Ge(100) Surface Utilizing Incident Beams of Electrons and Positrons
    • May 1996
      Haiqing Zhou, (Nursing)
      Auger Line Shape Measurementsdusing High Resolution Positron Annihilation Induced Auger Electron Spectroscopy.
    • Dec 1995
      Stephen Wheeler, (Physics)
      Comparison of Theoretical and Experimental Positron Annihilation Induced Auger Electron Intensities from Ge(100) and Ge(111) Surfaces
    • Dec 1992
      Keun-Ho Lee, (Physics)
      Study of Submonolayer Films of Au/Cu(100) and pd/Cu(100) Using positron Annihilation Induced Auger Electron Spectroscopy
    • Aug 1990
      David Mehl, (Physics)
      Investigation of the Surface Sensitivity of Positron-Annihilation-Induced Auger-Electron Spectroscopy
    • May 1990
      Keun-Ho Lee, (Physics)
      The Relative Intensity of Positron Annihilation-Induced Auger Electron Emission From Fe, Cu, Pd, and Au
    • 1987
      Mohammed Jibaly, (Philosophy)

Courses

      • PHYS 4319-001 ADVANCED MECHANICS
        (Course Id: 108571)
        Spring - Regular Academic Session - 2020
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      • PHYS 1400-001 INTRO TO MUSICAL ACOUSTICS
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        Fall - Regular Academic Session - 2011
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      • PHYS 5694-024 RESEARCH IN PHYSICS
        (Course Id: 108629)
        Spring - Regular Academic Session - 2011
      • PHYS 4319-001 ADVANCED MECHANICS
        (Course Id: 108571)
        Fall - Regular Academic Session - 2010
      • PHYS 4117-001 INDIVIDUAL LEARNING SEMINAR
        (Course Id: 108562)
        Fall - Regular Academic Session - 2010
      • PHYS 5394-024 RESEARCH IN PHYSICS
        (Course Id: 108619)
        Fall - Regular Academic Session - 2010
      • MSE 5698-024 THESIS
        (Course Id: 103535)
        Fall - Regular Academic Session - 2010
      • PHYS 5698-024 THESIS
        (Course Id: 108630)
        Fall - Regular Academic Session - 2010
      • PHYS 5394-024 RESEARCH IN PHYSICS
        (Course Id: 108619)
        Summer - Eleven Week - 2010
      • PHYS 5694-024 RESEARCH IN PHYSICS
        (Course Id: 108629)
        Summer - Eleven Week - 2010
      • PHYS 2311-001 MATH METHODS OF PHYSICS
        (Course Id: 108542)
        Spring - Regular Academic Session - 2010
      • MSE 6698-024 RESEARCH IN MSE
        (Course Id: 103551)
        Spring - Regular Academic Session - 2010
      • PHYS 5394-024 RESEARCH IN PHYSICS
        (Course Id: 108619)
        Spring - Regular Academic Session - 2010
      • PHYS 1188-024 SPEC PROBLEMS GENERAL PHYSICS
        (Course Id: 108520)
        Spring - Regular Academic Session - 2010
      • PHYS 5698-024 THESIS
        (Course Id: 108630)
        Spring - Regular Academic Session - 2010
      • PHYS 1400-001 INTRO TO MUSICAL ACOUSTICS
        (Course Id: 108522)
        Fall - Regular Academic Session - 2009
      • MSE 6398-024 RESEARCH IN MSE
        (Course Id: 103546)
        Fall - Regular Academic Session - 2009
      • PHYS 5394-024 RESEARCH IN PHYSICS
        (Course Id: 108619)
        Fall - Regular Academic Session - 2009
      • PHYS 5694-024 RESEARCH IN PHYSICS
        (Course Id: 108629)
        Fall - Regular Academic Session - 2009
      • PHYS 4181-024 SPECIAL PROBLEM
        (Course Id: 108564)
        Fall - Regular Academic Session - 2009
      • PHYS 5698-024 THESIS
        (Course Id: 108630)
        Fall - Regular Academic Session - 2009

Service to the Profession

    • Sept 2015 to  Aug 2018
      Workshop Organizer (Orlando, Florida, USA)
      18th International Conference on Positron Annihilation
      Conference Co-Chair (with Dr. Farida Selim)