Publications

    All publications by Dr. Stefan Zollner (PDF file)

  1. Carola Emminger, Farzin Abadizaman, Nuwanjula S. Samarasingha, Thomas E. Tiwald, and Stefan Zollner, Temperature dependent dielectric function and direct bandgap of Ge, J. Vac. Sci. Technol. B 38, 012202 (2020).
  2. Farzin Abadizaman and Stefan Zollner, Optical constants of polycrystalline Ni from 0.06 to 6.0 eV at 300 K, J. Vac. Sci. Technol. B 37, 062920 (2019).
  3. Aakash Mathur, Dipayan Pal, Ajaib Singh, Rinki Singh, Stefan Zollner, and Sudeshna Chattopadhyay, Dual ion beam grown silicon carbide thin films variation in refractive index and band gap as a function of film thickness, J. Vac. Sci. Technol. B 37, 041802 (2019).
  4. Steffen Richter, Oliver Herrfurth, Shirley Espinoza, Mateusz Rebarz, Miroslav Kloz, Joshua A. Leveillee, André Schleife, Stefan Zollner, Marius Grundmann, Jakob Andreasson, and Rüdiger Schmidt-Grund, Ultrafast dynamics of hot charge carriers in an oxide semiconductor probed by femtosecond spectroscopic ellipsometry, (under review).
  5. Alireza Kazemi, Amin Ranjbar, Qingyuan Shu, Vinita Dahiya, Zahra Taghipour, Pablo Paradis, Christopher Ball, Theodore J. Ronningen, Stefan Zollner, Steven M. Young, Jordan Budhu, Kevin A. Grossklaus, Thomas E. Vandervelde, Anthony Grbic, Sanjay Krishna, Subwavelength antimonide infrared detector coupled with dielectric resonator antenna, Proc. SPIE (under review).
  6. Shirly Espinoza, Steffen Richter, Mateusz Rebarz, Oliver Herrfurth, Rüdiger SchmidtGrund, Jakob Andreasson, and Stefan Zollner, Transient dielectric functions of Ge, Si, and InP from femtosecond pump-probe ellipsometry, Appl. Phys. Lett. 115, 052105 (2019).
  7. Stefan Zollner, Pablo P. Paradis, Farzin Abadizaman, and Nuwanjula S. Samarasingha, Drude and Kukharskii mobility of doped semiconductors extracted from Fourier transform infrared ellipsometry spectra, J. Vac. Sci. Technol. B 37, 012904 (2019).
  8. Rigo A. Carrasco, Stefan Zollner, Stephanie A. Chastang, Jinsong Duan, Gordon J. Grzybowski, Bruce B. Claflin, and Arnold M. Kiefer, Dielectric function and band structure of Sn1−xGex (x<0.06) alloys on InSb, Appl. Phys. Lett. 114, 062102 (2019).
  9. Rigo A. Carrasco, Cesy M. Zamarripa, Stefan Zollner, José Menéndez, Stephanie A.Chastang, Jinsong Duan, Gordon J. Grzybowski, Bruce B. Claflin, and Arnold M. Kiefer, The direct band gap of gray α-tin investigated by infrared ellipsometry, Appl. Phys. Lett.113, 232104 (2018).
  10. Dominic Imbrenda, Ryan Hickey, Rigo Carrasco, Nalin S. Fernando, Jeremy VanDerslice, Stefan Zollner, and James Kolodzey, Infrared dielectric response, index of refraction, and absorption of germanium-tin alloys with tin contents up to 27% deposited by molecular beam epitaxy, Appl. Phys. Lett. 113, 122104 (2018).
  11. Nalin S. Fernando, Rigo A. Carrasco, Ryan Hickey, John Hart, Ramsey Hazbun, Stefan Schoeche, James N. Hilfiker, James Kolodzey, and Stefan Zollner, Band gap and strain engineering of pseudomorphic Ge1-x-ySixSny alloys on Ge and GaAs for photonic applications, J. Vac. Sci. Technol. B 36(2), Mar/Apr, (2018).
  12. Chi Xu, Nalin S. Fernando, Stefan Zollner, John Kouvetakis, and José Menéndez, Observation of Phase-Filling Singularities in the Optical Dielectric Function of Highly Doped n-Type GePhysical Review Letters 118, 267402 (2017).
  13. Ryan Hickey, Nalin Fernando, Stefan Zollner, John Hart, Ramsey Hazbun, and James Kolodzey, Properties of pseudomorphic and relaxed Germanium1-xTinx alloys with Tin Contents up to 18.5 Percent grown by MBE, Vac. Sci. Technol. B 35, 021205 (2017).
  14. D. Pal, J. Singhal, A. Mathur, A. Singh, S. Dutta, S. Zollner, and S. Chattopadhyay, Effect of substrates and thickness on optical properties in atomic layer deposition grown ZnO thin films, Applied Surface Science 421, 341-348, (2016).
  15. S. Zollner, T.N. Nunley, D.P. Trujillo, L.G. Pineda, and L.S. Abdallah, Temperature-dependent dielectric function of Nickel, Applied Surface Science 421, 913-916, (2017).
  16. N.S. Fernando, T.N. Nunley, A. Ghosh, C.M. Nelson, J.A. Cooke, A.A. Medina, S. Zollner, C. Xu, J. Menendez, and J. Kouvetakis, Temperature dependence of the interband critical points of bulk Ge and strained Ge on Si, Applied Surface Science 421, 905-912, (2017).
  17. T.N. Nunley, N.S. Fernando, N. Samarasingha, J.M. Moya, C.M. Nelson, A.A. Medina, and S. Zollner, Optical constants of germanium and thermally grown germanium dioxide from 0.5 to 6.6 eV via a multi-sample ellipsometry investigation, J. Vac. Sci. Technol. B 34, 061205 (2016).
  18. D. Pal, A. Mathur, A. Singh, S. Dutta, J. Singhal, S. Zollner, and S. Chattopadhyay, Tunable optical properties in atomic layer deposition grown ZnO thin films, Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 35.1 (2017): 01B108.
  19. T.N. Nunley, T.I. Willett-Gies, J.A. Cooke, F. Manciu, P. Marsik, C. Bernhard, and S. Zollner, Optical constants, band gap, and infrared-active phonons of (LaAlO3)0.3(Sr2AlTaO6)0.35 (LSAT) from spectroscopic ellipsometry, J. Vac. Sci. Technol. A 34, 051507 (2016).
  20. A.A. Taludker, Y. Cui, M. Compton, W. Geerts, L. Scolfaro, and S. Zollner, FTIR ellipsometry study on RF sputtered permalloy oxide thin films, MRS Advances (2016): 1-6
  21. J. Hart, R. Hazbun, D. Eldridge, R. Hickey, N. Fernando, T. Adam, S. Zollner, and J. Kolodzey, Tetrasilane and Digermane for the ultra-high vacuum chemical vapor deposition of SiGe alloys, Thin Solid Films 604, 23 (2016).
  22. R. Hazbun, J. Hart, R. Hickey, A. Ghosh, N. Fernando, S. Zollner, T.N. Adam, and J. Kolodzey, Silicon epitaxy using tetrasilane at low temperatures in ultra high vacuum chemical vapor deposition, J. Cryst. Growth 444, 21 (2016).
  23. A. Ghosh, C.M. Nelson, L.S. Abdallah, and S. Zollner, Optical constants and band structure of trigonal NiO, J. Vac. Sci. Technol. A 33, 061203 (2015).
  24. T.I. Willett-Gies, C.M. Nelson, L.S. Abdallah, and S. Zollner, Two-phonon absorption in LiF and NiO from infrared ellipsometry, J. Vac. Sci. Technol. A 33, 061202 (2015).
  25. M. Choi, C. Lin, M. Butcher, C. Rodriguez, Q. He, A.B. Posadas, A.Y. Borisevich, S. Zollner, A.A. Demkov Quantum confinement in transition metal oxide quantum wells, Appl. Phys. Lett. 106, 192902 (2015).
  26. K.D. Fredrickson, C. Lin, S. Zollner, A.A Demkov, Theoretical study of negative optical mode splitting in LaAlO3, Phys. Rev. B. 93, 134301 (2016).
  27. A. O’Hara, T.N. Nunley, A.B. Posadas, S. Zollner, A.A. Demkov, Electronic and Optical Properties of NbO2, J. Appl. Phys. 116, 213705 (2014).
  28. L. Abdallah, S. Zollner, C. Lavoie, A. Ozcan, and M. Raymond, Optical conductivity of Ni1-xPtxSi monosilicides (0<x<0.3) from spectroscopic ellipsometry, J. Vac. Sci. Technol. B 32, 051210 (2014).
  29. L. Abdallah, T.M. Tawalbeh, I.V. Vasiliev, S. Zollner, C. Lavoie, A. Ozcan, and M. Raymond, Optical conductivity of Ni1-xPtx alloys (0<x<0.25) from 0.76 to 6.6 eV, AIP Advances 4, 017101 (2014).
  30. M. Choi, A.B. Posadas, C.O. Rodriguez, A. O’Hara, H. Seinige, A.J. Kellock, M.M. Frank, M. Tsoi, S. Zollner, V. Narayanan, and A.A. Demkov, Structural, optical and electrical properties of strained La-doped SrTiO3 films, J. Appl. Phys. 116, 043705 (2014).
  31. K.J. Kormondy, A.B. Posadas, A. Slepko, A. Dhamdere, D.J. Smith, K.N. Mitchell, T.I. Willet-Gies, S. Zollner, L.G. Marshall, J. Zhou, A.A. Demkov, Epitaxy of polar semiconductor Co3O4 (110): Growth, structure, and characterization, J. Appl. Phys. 115, 243708 (2014)
  32. Lina S. Abdallah, Stefan Zollner, Christian Lavoie, Ahmet Ozcan, and Mark Raymond, Optical conductivity of Ni1-xPtxSi monosilicides (0 < x < 0.3) from spectroscopic ellipsometry, J. Vac. Sci. Technol. B 32, 051210 (2014).
  33. Christian J. Zollner, Travis I. Willett-Gies, Stefan Zollner, S. Choi, Infrared to vacuum-ultraviolet ellipsometry studies of spinel (MgAl2O4), Thin Solid Films 571, 686-694 (2014).
  34. Lina S. Abdallah, Stefan Zollner, Christian Lavoie, Ahmet Ozcan, Mark Raymond, Compositional dependence of the optical conductivity of Ni1 − xPtx alloys (0 < x < 0.25) determined by spectroscopic ellipsometry, Thin Solid Films 571, 484-489 (2014).
  35. Travis Willett-Gies, Eric DeLong, Stefan Zollner, Vibrational properties of bulk LaAlO3 from Fourier-transform infrared ellipsometry, Thin Solid Films 571, 620-624 (2014).
  36. A.B. Posadas, C. Lin, A.A. Demkov, S. Zollner Band gap engineering in perovskite oxides: Al-doped SrTiO3, Appl. Phys. Lett. 103, 142906 (2013).
  37. Cayla Marie Nelson, Maria Spies, Lina S. Abdallah, Stefan Zollner, Y. Xu, and H. Luo, Dielectric function of LaAlO3 from 0.8 to 6 eV between 77 and 700K, J. Vac. Sci. Technol. A 30, 061404-1-6 (2012).
  38. S. G. Choi, J. Hu, Lina S. Abdallah, M. Limpinsel, Y. N. Zhang, S. Zollner, R. Q. Wu, and M. Law, Pseudodielectric function and critical-point energies of iron pyrite, Phys. Rev. B 86, 115207-01-05 (2012).
  39. C. V. Weiss, J. Zhang, M. Spies, L. S. Abdallah, S. Zollner, M. W. Cole, and S. P. Alpay, Bulk-like dielectric properties from metallo-organic solution-deposited SrTiO3 films on Pt-coated Si substrates,, J. Appl. Phys. 111, 054108 (2012).

Thesis Presented in Defense of Masters and Doctoral Degree Requirements:

  1. Carola Emminger, Polarization dependent studies of linear and non-linear optical response, Accepted in completion of Masters of Science, Johannes Kepler University Linz
    Center for Surface and Nanoanalytics (December 2017)
  2. Nalin S. Fernando, Optical Characterization of group-IV semiconductor alloys using Spectroscopic Ellipsometry and high resolution X-Ray diffraction, Accepted in completion of Doctor of Philosophy, New Mexico State University
    Department of Physics (April 2017)
  3. Cesar A. Rodriguez, Electronic properties of SrTiO3 epitaxial layers investigated by Spectroscopic Ellipsometry, Accepted in completion of Masters of Science, New Mexico State University
    Department of Physics (July 2016)
  4. Timothy N. Nunley, Ellipsometric study of simple and complex oxides from the mid infrared to the near ultraviolet, Accepted in completion of Masters of Science, New Mexico State University
    Department of Physics (July 2016)
  5. Lina S. Abdallah, Ellipsometry of Ni1-xPtx Alloys and Related Silicides, Accepted in completion of Doctor of Philosophy, New Mexico State University
    Department of Physics (August 2014)
  6. Travis I. Willet-Gies, Lattice Dynamics of LaAlO3 and MgAl2O4, Accepted in completion of Masters of Science, New Mexico State University
    Department of Physics (May 2014)