Charles Bessey Professor, Physics & Astronomy/
Nebraska Center for Materials and Nanoscience
Fax: (402) 472-6148
Office: JH 310L
Phone: (402) 472-9838
- Biographical Summary
- Interests and Capabilities
- Research Projects
- Other Links
- Publication Record
- Recent Results and Key References
- Graduate Students (and current affiliations)
- Post-doc's (and current affiliations)
- 2002 - present: Charles Bessey Professor, University of Nebraska
- 1995 - present: Professor of Physics and Graduate Fellow, University of Nebraska
- 1994 - present: Research Professor of Chemistry, University of Nebraska
- 1993 - 1995: Associate Prof. of Physics and Graduate Fellow, University of Nebraska
- 1990 - 1993: Associate Prof. of Physics, Syracuse University, Syracuse, New York
- 1987 - 1996: Adjunct Prof. of Chemistry, Syracuse University,
- 1986 - 1993: Member of Solid State Science and Technology Program, Syracuse
- 1984 - 1990: Assistant Prof. of Physics, Syracuse University
- 1981 - 1983: Scientist with the Fritz-Haber Institut der Max-Planck-Gesellschaft, FRG
- 1981 - Visiting Scientist to the Department of Physics, University Osnabrueck, FRG
- 1980 - 1981: Research Assistant to Dr. M. Grunze, Fritz-Haber Institut der Max-Planck
Gesellschaft, and the Free University, Berlin, FRG
- 1981 - Ph.D. in Physics, University of Cambridge
- Xin Zhang
Elena Echevarria Mora
Collaborators at UNL
- Kirill Belashchenko (Physics)
- Christian Binek (Physics)
- Barry Cheung (Chemistry)
- Axel Enders (Physics)
- Alexei Gruverman (Physics)
- Tino Hoffman (Engineering)
- Xia Hong (Physics)
- Wai-Ning Mei (Physics)
- R. Skomski (Physics)
- Andre Sokolov (Physics)
- Alexander Sinitskii (Chemistry)
- Evgeny Tsymbal (Physics)
The major focus of the Dowben group emphasizes the changes in electronic (band) structure across electronic phase transitions in reduced dimensionality. Of interest are ferromagnetism in local moment systems or spatially restricted systems, ferroelectricity and the nonmetal to metal transition.
Specific techniques include angle-resolved photoemission, resonant photoemission, inverse photoemission and spin polarized inverse photoemission. Other techniques include spin polarized photoemission, characteristic energy loss, low energy electron diffraction, angle resolved thermal desorption spectroscopy, X-ray photoemission, and Magneto-optic Kerr effect.
(1) Organic and Photolytic organometallic chemical vapor deposition of materials in ultrahigh vacuum for spin valves and spin-tunnel junctions.
(2) Orientation, bonding and electronic structure of organic overlayers, organometallic molecular overlayers and molecular magnets.
(3) The temperature dependent electronic structure of ferroelectric crystalline molecular films, as a function of metallicity.
(4) The spin polarized occupied and unoccupied band structure of local moment ferromagnetic systems as a function of temperature.
Funded by the NSF-Chem., NSF Quantum and Spin MRSEC (DMR-0213808), the Defense Threat Reduction Agency, the Semiconductor Research Corporation-DARPA joint program SRC-NRI NIST initiative
- Surface Science:
- Nanodots and Clusters:
- (Ward Plummer) www.phys.utk.edu/WPWebSite/ewp_main.htm
- Synchrotron Light Sources:
- (SRC) www.src.wisc.edu/
- (CAMD) www.camd.lsu.edu/
- (NSLS) www.nsls.bnl.gov/
- (BESSY) www.bessy.de/
- Rare Earth Magnetism:
- (Berlin) orion.physik.hu-Berlin.de
- Boron Carbide Neutron Detectors:
Author of more than 480 articles in refereed journals and books, 28 invited review articles, 26 invited presentations at national and international conferences, and 15 patents. Some papers may be found on the digital commons: http://digitalcommons.unl.edu/physicsdowben
Limits to Half Metallic Ferromagnetism:
P.A. Dowben, J. Phys. Cond. Matter 19 (2007) 31031, and the papers that follow in that issue of JPCM.
Xin Zhang, Ning Wu, M. Manno, C. Leighton, Elio Vescovo, P.A. Dowben, "Resonant Photoemission and Spin Polarization of Co1-xFexS2", Journ. Phys. Condens. Matter 25 (2013) 012001
P.A. Dowben and S.J. Jenkins. "The Limits to Spin-Polarization in Finite-Temperature Half- Metallic Ferromagnets", in Frontiers in Magnetic Materials, edited by Anant Narlikar, Springer Verlag (2005).
N.Wu, P. A. Dowben, "Magnetic Surface States in High Polarization Materials", Spintronics IV, edited by H. Drouhin, J. Wegrowe, M. Razeghi, Proc. of SPIE Vol. 8100 (2011) 81000T.
P.A. Dowben and R. Skomski, "Are Half-Metallic Ferromagnets Half-Metals? (invited)", Journal of Applied Physics 95 (2004) 7453-7458.
Electrostatic Dipolar Coupling on the Local Scale:
P.A. Dowben, Luis G. Rosa, Carolina C. Ilie, and Jie Xiao, "Adsorbate/Absorbate Interactions with Organic Ferroelectric Polymers", J. Electron Spectroscopy and Related Phenomena 174 (2009) 10-21.
Z. Zhang, J. Alvira, X. Barbosa, L. B. Rosa, L. Routaboul, P. Braunstein, B. Doudin, P. A. Dowben, "Lock and Key Absorption Chemistry: Preferential Abstorption of an Isomer of Di-Iodobenzene on Molecular Films of Quinonoid Zitterions", J. Physical Chemistry C 115 (2011) 2812-2818.
Z. Zhang, R. Gonzalez, G. Diaz, L. G. Rosa, I. Ketsman, X. Zhang, P. Sharma, A. Gruverman, P. A. Dowben, "Polarization Mediated Chemistry on Polymer Ferroelectric Surfaces", J. Phys. Chem. C 115 (2011) 13041-13046.
D. Kunkel, S. Simpson, J. Nitz, G. Rojas, E. Zurek, L. Routaboul, B. Doudin, P. Braunstein, P. Dowben, and A. Enders, "Dipole Driven Bonding Schemes of Quinonoid Zwitterions on Surfaces", Chem. Comm. 48 (2012) 7143-7145
Recent General Papers on Surface & Interface Magnetism:
Xi He, Yi Wang, Ning Wu, Anthony N. Caruso, Elio Vescovo, Kirill D. Belashchenko, Peter A. Dowben and Christian Binek, "Robust Isothermal Electric Control of Exchange Bias at Room Temperature", Nature Materials 9 (2010) 579-585.
N. Wu, Xi He, A. Wysocki, U. Lanke, T. Komesu, K.D. Belaschenko, Ch. Binek, and P.A. Dowben, "Imaging and control of surface magnetization domains in a magnetoelectric antiferromagnet", Physical Review Letters 106 (2011) 087202
J.P. Velev, P.A. Dowben, E.Y. Tsymbal, S.J. Jenkins and A.N. Caruso, "Interface Effects in Spin-Polarized Metal/Insulator Layered Structures", Surface Science Reports 63 (2008) 400-425.
S. Cao, P. Liu, J. Tang, H. Lu, C.W. Bark, S. Ryu, C.B. Eom, A. Gruverman, and P.A. Dowben, "Magnetoelectric Coupling at the EuO/BaTiO3 Interface", Applied Physics Letters 102 (2013) 172402
NAME Degree Date Current Affiliation Daniel C. Driscoll Ph.D. 1987 Naval Surface Warfare Center, Virginia Hans-Jorg Ruppender Dipl. Chem. 1987 CEO Omnivac, Kaiserslautern, FRG Greg T. Stauf Ph.D. 1988 IP Value, Branchburg, NJ Sangramitra Baral M. Sc. 1990 NRL Shikha Varma Ph.D. 1990 Associate Professor of Physics, Institute of Physics, Bhubaneswar, India David LaGraffe Ph.D. 1990 Acting Director, Office of Poliferation Detection, NA-221, Col. (Army)
National Nuclear Security Administration
Yolanda Kime Ph.D. 1991 S.U.N.Y-Cortland, Professor Emeritus John Mazurowski M.Sc. 1992 Senior Engineer, Pennsylvania State Univ. Electro-Optic Cntr. http://www.electro-optics.org Yoon-Gi Kim Ph.D. 1992 Samsung Electronics, South Korea Sunwoo Lee Ph.D. 1992 Patent Law, Roetzel & Andress, Washington D.C. Dongqi Li Ph.D. 1993 On disability leave Jiandi Zhang Ph.D. 1994 Professor of Physics, Louisiana State University
Dongjin Byun Ph.D. 1995 Professor, Dept. of Materials Science and Engineering, Korea University Seong-Don Hwang Ph.D. 1996 Patent Lawyer, Seoul, Korea John Kushneir III M.Sc. 1996 Leybold-Inficon, East Syracuse Tara Jean McAvoy M.Sc. 1997 Process Engineer with Raytheon, California Dulip Welipitiya Ph.D. 1997 TDK/Headway, San Jose, CA Carlo Waldfried Ph.D. 1998 Axcelis Jaewu Choi Ph.D. 1998 Professor, Dept. of Information Display, Kyung Hee University, Korea Delia Ristoiu Ph.D. 2000 ST-Microelectronics, Grenoble, France Hanni Dulli Ph.D. 2000 German University of Technology, Muscat, Oman Camelia Borca Ph.D. 2001 Staff, Paul Scherrer Institute Laeticia Bernard Diplom Physiker 2002 Staff, Paul Scherrer Institute Rui-Hua Cheng Ph.D. 2002 Associate Professor, Indiana University - Purdue - Indianapolis Takashi Komesu Ph.D. 2002 Research Assistant Professor, UNL Bo Xu Ph.D. 2002 Assistant Professor of Physics, Yanjing University Hae-Kyung Jeong Ph.D. 2003 Professor, Daegu University Anthony Caruso Ph.D. 2004 Associate Professor, Univ. of Missouri - Kansas City Luis Rosa Ph.D. 2005 Associate Professor of Physics, University of Puerto Rico - Humacao Snow Balaz M.Sc. 2005
(Ph.D. in Engineering with J. Brand, 2007)
Post-doc., Department of Physics, Ohio State University Danqin Feng Ph.D. 2007 Optoplex, Santa Barbara, California Carolina Ilie Ph.D. 2008 Associate Professor of Physics, S.U.N.Y. - Oswego David Wisbey Ph.D. 2008 Assistant Professor of Physics, St. Louis University, St. Louis, MO Jie Xiao Ph.D. 2009 Staff, BESSY II, Berlin Ning Wu Ph.D. 2009 Research Assistant, Rutgers University David Wooten Ph.D. 2010 Staff, STRATCOM Jing Liu Ph.D. 2011 Post-Doc, Northeastern University Zheng Zheng Zhang Ph.D. 2011 University of Wisconsin - Madison Juan Colón Santana Ph.D. 2012 Post-Doc, UNL Energy Institute Keisuke Fukutani Ph.D. 2012 Assistant Professor, Tohoku University Lingmei Kong Ph.D. 2012 Post-Doc, PNNL
NAME Date(s) Worked For Dowben Current Affiliation David McIlroy 1993-1996 Professor of Physics, University of Idaho, Chair Jiandi Zhang 1994-1995 Professor of Physics, Louisiana State University
Zhenchen Zhong 1997-1999 JQM Magnetic Systems, China Jaewu Choi 1998-2001 Chair, Dept. of Information Display, Kyung Hee University, Korea Hae-Kyung Jeong 2003-2004 Professor, Daegu University Takashi Komesu 2007, 2013-Present University of Nebraska Ihor Ketsman 2006 - 2011 University of North Texas Jie Xiao 2009 - 2010 Staff, BESSY II, Berlin Ning Wu 2009 - 2012 Rutgers University