Charles Bessey Professor of Physics,
Nebraska Center for Materials and Nanoscience
310L Jorgensen Hall
402-472-9838
402-472-6148 (fax)
pdowben@unl.edu
Author of more than 680 articles in refereed journals and books, 37 invited review articles, 34 invited presentations at national and international conferences, and 34 patents. Some papers may be found on the digital commons: Digital Commons Page
Surface Science:
www.lasurface.com/accueil/index.php
Biographical Summary
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, Syracuse, New York
1986 - 1993: Member of Solid State Science and Technology Program, Syracuse University, Syracuse, New York
1984 - 1990: Assistant Prof. of Physics, Syracuse University, Syracuse, New York
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
Interests and Capabilities
The major focus of the Dowben group emphasizes the changes in electronic (band) structure across electronic phase transitions in reduced dimensionality and multiferroic coupling. Of interest are ferromagnetism in local moment systems or spatially restricted systems, ferroelectricity, multiferroic behavior, deterministic changes of spin state in molecular systems, 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, x-ray magnetic circular dichroism, x-ray absorptions, characteristic energy loss, low energy electron diffraction, angle resolved thermal desorption spectroscopy, X-ray photoemission, and magneto-optic Kerr effect.
Research Projects
- Organic and organometallic materials in ultrahigh vacuum molecular multiferroics
- Orientation, bonding and electronic structure of organic overlayers, organometallic molecular overlayers and molecular magnets.
- The temperature dependent electronic structure of ferroelectric crystalline molecular films, as a function of metallicity.
- The spin polarized occupied and unoccupied band structure of local moment ferromagnetic systems as a function of temperature.
Funded by the NSF
Research
Group Personnel | Collaborators at UNL |
Takashi Komesu |
Kirill Belashchenko (Physics) Christian Binek (Physics) Alexei Gruverman (Physics) Xia Hong (Physics) Rebecca Lai (Chemistry) Wai-Ning Mei (Physics) Alexander Sinitskii (Chemistry) Robert Streubel (Physics) Evgeny Tsymbal (Physics) Xiaoshan Xu (Physics) |
Recent Results and Key References
Electrostatic Dipolar Coupling on the Local Scale:
Aaron Mosey, Ashley S. Dale, Guanhua Hao, Alpha N'Diaye, Peter A. Dowben, Ruihua Cheng, "Quantitative Study of Energy Change in Voltage-controlled Spin Crossover Molecules for Molecular Spintronics", J. Physical Chemistry Letters 11 (2020) 8231-8237
Guanhua Hao, Aaron Mosey, Xuanyuan Jiang, Andrew J. Yost, Keshab R. Sapkota, George T. Wang, Xin Zhang, Jian Zhang, Alpha T. N'Diaye, Ruihua Cheng, Xiaoshan Xu, Peter A. Dowben, "Nonvolatile Voltage Controlled Molecular Spin State Switching", Appl. Phys. Lett. 114 (2019) 032901; doi: 10.1063/1.5054909
Xin Zhang, Alpha T. N'Diaye, Xuanyuan Jiang, Xiaozhe Zhang, Yuewei Yin, Xuegang Chen, Xia Hong, Xiaoshan Xu, Peter A. Dowben, "Indications of magnetic coupling effects in spin cross-over molecular thin films", Chem. Commun. 54 (2018) 944-947.
Xin Zhang, Paulo S. Costa, James Hooper, Daniel P. Miller, Alpha T. N'Diaye, Sumit Beniwal, Xuanyuan Jiang, Yuewei Yin, Patrick Rosa, Lucie Routaboul, Mathieu Gonidec, Lorenzo Poggini, Pierre Braunstein, Bernard Doudin, Xiaoshan Xu, Axel Enders, Eva Zurek, Peter A. Dowben, "Locking and Unlocking the Molecular Spin Cross-Over Transition", Advanced Materials 32 (2017) 1702257.
Recent General Papers on Surface & Interface Magnetism:
Ather Mahmood, Will Echtenkamp, Mike Street, Jun-Lei Wang, Shi Cao, Takashi Komesu, Peter A. Dowben, Pratyush Buragohain, Haidong Lu, Alexei Gruverman, Arun Parthasaraty, Shaloo Rakheja, Christian Binek, "Voltage controlled Neel vector rotation in zero magnetic field at CMOS-compatible temperatures". Nature Communications 12 (2021) 1674
Peter A. Dowben, Christian Binek, Kai Zhang, Lu Wang, Wai-Ning Mei, Jonathan P. Bird, Uttam Singisetti, Xia Hong, Kang L. Wang, Dmitri Nikonov, "Towards a Strong Spin-Orbit Coupling Magnetoelectric Transistor", IEEE Journal of Exploratory Solid-State Computational Devices and Circuits 4 (2018) 1-9; Online ISSN: 2329-9231; doi: 10.1109/JXCDC.2018.2809640
Graduate Students (and Current Affiliations)
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 | Professor of Physics, Institute of Physics, Bhubaneswar, India |
David LaGraffe | Ph.D. 1990 | Director, Office of Poliferation Detection, NA-22, National Nuclear Security Administration |
Yolanda Kime | Ph.D. 1991 | S.U.N.Y-Cortland, Professor Emeritus, Software Developer, Chicago |
John Mazurowski | M.Sc. 1992 | Senior Engineer, Pennsylvania State Univ. Electro-Optic Cntr. |
Yoon-Gi Kim | Ph.D. 1992 | Samsung Electronics, South Korea |
Sunwoo Lee | Ph.D. 1992 | Patent Law, Polsinelli PC, Washington D.C. |
Dongqi Li | Ph.D. 1993 | On disability leave |
Jiandi Zhang | Ph.D. 1994 | Institute of Physics, Chinese Academy of Sciences NSF Highlight |
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 | Headway Technologies, Milpitas, CA |
Carlo Waldfried | Ph.D. 1998 | Director of Innovation, Entegris |
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 | Instructor, Dept. of Physics, Texas Tech University |
Camelia Borca | Ph.D. 2001 | Staff, Paul Scherrer Institute |
Laeticia Bernard | Diplom Physiker 2002 | Staff, Glas Trosch AG |
Rui-Hua Cheng | Ph.D. 2002 | Professor, Indiana University - Purdue - Indianapolis |
Takashi Komesu | Ph.D. 2002 | Research Associate Professor, UNL |
Bo Xu | Ph.D. 2002 | Professor of Physics, Yanshan University |
Hae-Kyung Jeong | Ph.D. 2003 | Professor, Daegu University |
Anthony Caruso | Ph.D. 2004 | Professor and Assistant Vice Chancellor of Research, Univ. of Missouri - Kansas City |
Luis Rosa | Ph.D. 2005 | Professor of Physics, University of Puerto Rico - Humacao |
Snow Balaz | M.Sc. 2005 (Ph.D. in Engineering with J. Brand, 2007) |
Assistant Professor, Department of Physics, Youngstown State University |
Danqin Feng | Ph.D. 2007 | Lumentum, Santa Barbara, California |
Carolina Ilie | Ph.D. 2008 | 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 | Engineer, Cognito Systems |
David Wooten | Ph.D. 2010 | Staff, STRATCOM |
Jing Liu | Ph.D. 2011 | Assistant Professor of Physics, Manhattan College |
Zheng Zheng Zhang | Ph.D. 2011 | Regional Editor, Royal Society of Chemistry |
Juan Colón Santana | Ph.D. 2012 | Assistant Professor, Aurora University |
Keisuke Fukutani | Ph.D. 2012 | Assistant Professor, Institute for Molecular Science Japan |
Lingmei Kong | Ph.D. 2012 | Analyst, National Futures Association |
Xin Zhang | Ph.D. 2016 | Staff, X-ray Optical Systems |
Elena Echeverria | Ph.D. 2017 | Staff, Cornell University |
Iori Tanabe | Ph.D. 2017 | Staff, National Instruments |
Shi Cao | Ph.D. 2017 | Staff, VISA Corp. |
Paulo Costa | Ph.D. 2018 | Data Scientist, First Republic Bank |
Prescott Evans | Ph.D. 2020 | Staff, Air Force Research Laboratory |
Simeon Gilbert | Ph.D. 2021 | Staff, Sandia National Laboratory |
Guanhua Hao | Ph.D. 2021 | Post-Doc, Berkeley National Laboratory |
Archit Dhingra | Ph.D. 2022 | Post-Doc, IMDEA Nanociencia |
Thilini Ekanayaka | Ph.D. 2023 | Staff, Applied Materials |
Esha Mishra | Ph.D. 2023 | Assistant Professor, Berry College |
Post-docs (and Current Affiliations)
Name | Date(s) Worked For Dowben | Current Affiliation |
---|---|---|
David McIlroy | 1993-1996 | Professor of Physics, Oklahoma State University |
Jiandi Zhang | 1994-1995 | Professor of Physics, Louisiana State University NSF Highlight |
Zhenchen Zhong | 1997-1999 | Professor, Materials Science, Nanchang Hong Kong University |
Jaewu Choi | 1998-2001 | Professor, 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 | passed away 2013 |
Jie Xiao | 2009 - 2010 | Staff, BESSY II, Berlin |
Ning Wu | 2009 - 2012 | Engineer, Cognito Systems |
Dong Jik Kim | 2014 | University of Seoul, Korea |
Aiyun Liu | 2015-2016 | Shanghia Normal University |
Andrew Yost | 2017-2019 | Regional Sales Manager, Scienta Omicron |