Cutting-Edge Research in Theoretical Physics

1. Kirill D. Belashchenko • Educ ation • Ph.D. Russian Research Center “Kurchatov • Institute,” 1999 • Theoretical physics; Advisor: Prof. V.G. Vaks • M.S., with Honors • Moscow Institute of Steel and Alloys, 1996 • Physics of Metals • Assistant Professor University of Nebraska-Lincoln 08/05–present • Research Assistant Professor U of Nebraska-Lincoln 10/02–08/05 • Assistant Scientist Ames Laboratory 01/02–09/02 • Visiting Scientist Ames Laboratory 10/99–01/02 • Jr Scientist Russian Research Center “Kurchatov Inst” 04/99–10/99

2. Publications 8. S. Sahoo, T. Mukherjee, K. D. Belashchenko, and Ch. Binek, Isothermal low-field tuning of exchange bias in Fe/Cr2O3/Fe, Appl. Phys. Lett. 91, 172506 (2007) 7. A. N. Chantis, K. D. Belashchenko, D. L. Smith, E. Y. Tsymbal, M. van Schilfgaarde, and R. C. Albers, “Reversal of spin polarization in Fe/GaAs (001) driven by resonant surface states: First-principles calculations”, Phys. Rev. Lett. 99, 196603 (2007). 6. Ya. B. Losovyj, I. Ketsman, A. Sokolov, J. Tang, Z. Wang, K. D. Belashchenko, P. A. Dowben, J. Tang, and Z. Wang, “The electronic structure change with Gd doping of HfO2 on silicon”, Appl. Phys. Lett. 91, 132908 (2007). 5. I. Ketsman, Y. B. Losovyj, A. Sokolov, J. Tang, Z. Wang, K. D. Belashchenko, and P. A. Dowben, “The n-type Gd-doped HfO2 to silicon heterojunction diode”, Appl. Phys. A 89, 489 (2007). 4. N. Wu, Ya. B. Losovyj, D. Wisbey, K. Belashchenko, M. Manno, L. Wang, C. Leighton, and P. A. Dowben, “The electronic band structure of CoS2”, J. Phys.: Condens. Matter. 19, 156224 (2007).

3. Publications, cont’d 3. J. P. Velev, C.-G. Duan, K. D. Belashchenko, S. S. Jaswal, and E. Y. Tsymbal, “Effect of ferroelectricity on electron transport in Pt/BaTiO3/Pt ferroelectric tunnel junctions”, Phys. Rev. Lett. 98, 137201 (2007). 2. J. P. Velev, K. D. Belashchenko, S. S. Jaswal, and E. Y. Tsymbal, “Effect of oxygen vacancies on spin-dependent tunneling in Fe/MgO/Fe magnetic tunnel junctions”, Appl. Phys. Lett. 90, 072502 (2007). A. N. Chantis, K. D. Belashchenko, E. Y. Tsymbal, M. van Schilfgaarde, “Tunneling anisotropic magnetoresistance driven by resonant surface states”, Phys. Rev. Lett. 98, 046601 (2007). Conference Proceedings 3. J. P. Velev, M. Ye. Zhuravlev, K. D. Belashchenko, S. S. Jaswal, E. Y. Tsymbal, T. Katayama, and S. Yuasa, “Defect-mediated properties of magnetic tunnel junctions”, IEEE Trans. Magn. 43, 2770-5 (2007). Proceedings of the 2007 MMM/INTERMAG Conference, invited paper. 2. A. L. Wysocki, K. D. Belashchenko, J. P. Velev, and M. van Schilfgaarde, “Calculations of spin-disorder resistivity from first principles”, J. Appl. Phys. 101 (2007). 2007 MMM/INTERMAG Conference proceedings. E. Y. Tsymbal, K. D. Belashchenko, J. P. Velev, S. S. Jaswal, M. van Schilfgaarde, I. I. Oleynik, and D. A. Stewart, “Interface effects in spin- dependent tunneling, Progr. Mater. Sci. 52, 401-420 (2007).

4. Current Research Funding • Nebraska Research Initiative, Designing materials for electrodes in spintronic devices, PI (with Christian Binek, Peter Dowben, Renat Sabirianov). 07/01/06-06/30/08; $431,378. • Defense Threat Reduction Agency, Novel rare-earth semiconductors for solid-state neutron detectors, Co-PI (with Jennifer Brand (PI), Peter Dowben, Yaroslav Losovyj). 12/01/06-11/31/09; $450,000. • NSF EPSCoR First Award, First-principles studies of electronic structure and transport in magnetic systems at finite temperatures, PI. 01/01/07-12/31/07$19,927. • NSF-SIA/NRI MRSEC Supplement, Multiferroic interfaces: New paradigms for functional switching, Co-PI (with E. Y. Tsymbal (PI), and R. F. Sabirianov). 03/01/07-02/28/10$400,000. • National Science Foundation, seed grant through Materials Research Science and Engineering Center, Theoretical studies of magnetotransport at finite temperatures. 05/01/06-04/30/07$17,822.

5. Other research proposals submitted CAREER: First-principles studies of electronic structure and transport in magnetic systems at finite temperatures (PI), NSF, 2007 (declined). 2. First-principles studies of electronic structure and transport in magnetic materials and heterostructures at finite temperatures (PI), DOE (pending). 3. First-principles studies of electronic structure and transport in magnetic systems at finite temperatures (PI), Research Corporation Cottrell Scholar Award (pending). 4. Phase transformations in confined nanosystems (Co-PI with Jeff Shield), DOE-EPSCoR (pending). 5. Novel Rare-Earth Semiconductors for Solid-State Neutron Detectors and Ultra-Thin High-k Dielectrics (Co-PI with Jinke Tang (PI at U. of Wyoming, Peter Dowben (UNL), and Yaroslav Losovyj (Louisiana State)), Wyoming ARO DEPSCoR (pending).

6. Teaching 2006 Spring PHYS 951 (3) 1.33 Fall PHYS 916 (13) 2007 Spring PHYS 912 (10) 2.75 Fall PHYS 916 (11) 1.45 Adv topics in Solid State (complete redesign). QM I - focusing on conceptual learning, using computer demos & tutorials, online quizzes & essay assignments “much improvement over semester” “conceptual checkpoints thru semester good!” “Would take any class he teaches!” All reported: “really enjoyed this class” • PhD Students Supervised • Aleksander Wysocki James Glasbrenner • Department Service • Graduate Admissions Committee, member • Advisory Committee • Ad Hoc Committee on Computational Facilities in New Nano Bldg • HEP Search Committee

7. Christian Binek Background Ph.D. Duisburg, 1995 Research Professor Duisburg, 1995-2003 Assistant Professor UNL, October 2003 - 2007 Outstanding Young Scientist Award from Sigma Xi for setting up a 1st-class laboratory to fabricate magnetic thin films and novel magnetic heterostructures with an emphasis on finding new and clever ways of controlling the exchange bias phenomenon in magnetic structures.

8. Research Publications 1. S. Polisetty, S. Sahoo, and Ch. Binek, Phys. Rev. B. 76, 184423 (2007), “Scaling Behavior of the Exchange-Bias Training Effect” 2. S. Sahoo, S. Polisetty, C.-G. Duan, Sitaram S. Jaswal, E. Y. Tsymbal, and Ch. Binek, Phys. Rev. B 76, 092108 (2007), “Ferroelectric control of magnetism in BaTiO3 /Fe heterostructures via interface strain coupling” 3. S. Sahoo, T. Mukherjee, K. D. Belashchenko, and Ch. Binek, Appl. Phys. Lett. 91, 172506 (2007), “Isothermal low-field tuning of exchange bias in epitaxial Fe/Cr2O3/Fe” 4. S. Sahoo and Ch. Binek, Phil. Mag. Lett. 87, 259 (2007), “Piezomagnetism in epitaxial Cr2O3 thin films and spintronic applications” 5. S. Sahoo, S. Polisetty, Ch. Binek, A. Berger, J. Appl. Phys. 101, 053902 (2007), “Dynamic enhancement of the exchange bias training effect” Submitted “Optimization of Magneto Optical Kerr Setup: Analyzing Experimental Assemblies Using Jones Matrix Formalism”, S. Polisetty, J. Scheffler, S. Sahoo, Yi Wang, T. Mukherjee, Xi He, and Ch. Binek, submitted to Rev. Sci. Inst. 2. “1D antiferromagnetic arrays of Ni magnetic nanoparticles” V. Bliznyuk,* S. Singamaneni, S. Sahoo, S. Polisetty, X. He, Ch. Binek

9. Conference Proceedings “Nanomagnetic Entropy” Ralph Skomski, Christian Binek, T. Mukherjee, S. Sahoo, and D. J. Sellmyer Book Chapters "Tunable Exchange Bias" in magnetic nanostructures”, (30 -age chapter) Editor L.P. Liu, Springer, in preparation Invited Talks “Electric and Magnetic Field Control of Exchange Bias” APS March 2007 (Denver, Colorado) Symposium on Exchange Bias “Electric and Magnetic Field Control of Exchange Bias” 10th Joint MMM/Intermag Conference, January 7-11, 2007 Baltimore, Maryland Colloquia “Electric and Magnetic Field Control of Exchange Bias” February 9 Colloquium Virginia Tech (http://www.phys.vt.edu/~talks/colloquia/colloquia0607.html) “Electric and Magnetic Field Control of Exchange Bias”, UNL

10. Current Funding NSF: “CAREER: Education and research on nanoscale spintronic systems and heterostructures” $ 500, 000/ 05/01/06 - 04/30/11 NRI: Designing materials for electrodes in spintronics devices $ 211, 000/ 2006 to 2007 NSF MRSEC: “Materials Research Science and Engineering Center: Quantum and Spin Phenomena in Nanomagnetic Structures” (with 16 other faculty) $5,306,939/ 06/01/02 - 05/30/08 NSF REU Site: “Nanomaterials/Nanoscience” $337,973 NCESR: “Magnetic Nanostructure for Energy-Efficient Cooling” $100,000/ 2006-2008

11. Submitted Proposals BOARD OF REGENTS FOR THE UNIVERSITY OF NEBRASKA-LINCOLN PRIVATE - SECTOR RESEARCH AGREEMENT # 41420 Single PI on a proposal for industry collaboration with Teledyne Isco “Magnetocaloric Refrigeration”. $ 9,588 agreement prepared by UNL attorneys Co-PI in IGERT proposal on magnetism at interfaces with Jeff Shield and others Co-PI on DOE proposal with Shireen Adenwalla

12. Teaching 2004 Spring 422/822 1.90 Fall 431/831 2.10 2005 Spring 422/822 only one form returned Fall 431/831 2.11 2006 Spring 422/822 1.80 Fall 431/831 1.50 2007 Spring 422/822 1.67 Fall 211 pending - though scores all over the place (some all 1s, some all 5s) PhD Students Supervised S. Polisetty X. He T. Mukherjee Y. Wang PostdocUndergrad S. Sahoo K. Jones Summer High School Teacher Jeremy Scheffler (Pius X High School) Department Service Academic Planning Committee Examination and Grading Appeals Committee Undergraduate Adviser SPS Adviser Advisory Committee

13. Ken Bloom Ph.D. 1997, Cornell Postdoc , Johns Hopkins, U. Michigan Joined UNL Fall 2004 348 publications, 38 in 2007 15 submitted, available as preprints • CDF: Ken is the primary author of • “Measurements of Inclusive W and Z Cross Sections” J. Phys. G 34, 457 (2007) • DØ • Ken has contributed to the DØ publications by • co-leading of DØ tracking algorithms group • modifying the charged-particle track reconstruction algorithms for DØ. • run more quickly, finds tracks with greater purity • now in use in physics analyses (and showing up in most of the submitted papers) • chairing the top quark internal review committee overseeing analysis employing lifetime-based b-quark identification algorithms

14. CMS: • Serves as Project Manager for the entire US CMS Tier-2 program, and of course • (also) the supervision of UNL’s Tier-2 site (setting the standard for peformance!) Plus • CMS: • co-lead the “lepton plus jets plus missing energy” group at the LPC

15. Current Support: NSF: “CAREER: Top-Quark Physics, Computing & Software at the LHC.” $110,000/year over five years continuing through 11/10 NSF: “Tier-2 US CMS Site at UNL.” (sub-award thru UCLA/US-CMS Program) $500,000/year over five years (through mid-2010) by the NSF through a. NSF Tier-2 Travel Supplement (sub-award through US-CMS) $8000. NSF“PIRE: Collaborative Research with the Paul Scherrer Institute and the Eidgenossiche Technische Hochschule on Advanced Pixel Silicon Detectors for the CMS Detector.” (University of Kansas (lead), University of Illinois-Chicago, University of Puerto Rico, Kansas State University); UNL (Aaron Dominguez, PI). $76,000/year over five years: support or 1 graduate and 1 undergraduate student. NSF “Experimental Particle Physics.” (Claes, Snow, Bloom, Dominguez) $191,000/year for three years. Submitted Proposal: EPSCor DOE:“The Luminosity Measurement for the DZERO experiment at Fermilab.” $137,000/year for three years requested. (for graduate student and a postdoc support through the end of the Tevatron run in 2009 or 2010).

16. Teaching 2004 Fall 201H 2005 Spring 311 2.80 Fall 201H Fall 441 2.92 2006 Spring 311 2.20 Fall 441 2.00 2007 Spring 311 2.53 Fall 441 2.10 PhD Students Supervised D. Johnston (co-advises with Dominguez) T.Kelly J. Keller (w/Claes) Introducing new labs! Homework complaints:2-3 pages to solve a single problem! All 1s or all 3s Complaints of detailed grading Department Service Graduate Committee Academic Planning Committee Steering Committee for new building Skit Coordinator, Holiday Party College Grading Appeals Committee Undergrad Chris Corder (UCARE) Jia-Fu Low (UCARE) Postdocs M. Eads (FNAL) S. Malik (FNAL)

17. Aaron Dominguez Ph.D. 1998 UCSD Postdoc LBNL Joined UNL: Fall 2004 More than 300 publications, 37 during 2007 • Elected to be on the USCMS Institutional Advisory Board • Elected to be on the Advisory Board for the LHC Physics Center • Deputy Level-2 Manager for CMS for the Forward Pixel Project • Co-convenor of the LPC B-Identification Physics Group • Member of QuarkNet Advisory Board (Fermilab) Spearheading CMS R&D for the next generation silicon pixel detector, a possible major new hardware project for the HEP group. Assembling a silicon R&D lab (117 Ferguson) with a manual microprobe station, LeCroy 104Mxi programmable digitial scope, a microscope and power supplies, where grad and undergrad students will carry out silicon pixel detector work for CMS.

18. Current Support: NSF: “CAREER: Superior Silicon Tracking and Discovery at CMS and D0” $550,000/ 5 years continuing through 11/10 NSF: “Tier-2 US CMS Site at UNL.” (sub-award thru UCLA/US-CMS Program) $500,000/year over five years (through mid-2010) by the NSF through a. NSF US-CMS Travel Supplement for Forward Pixel Detector Work $59,6000. NSF“PIRE: Collaborative Research with the Paul Scherrer Institute and the Eidgenossiche Technische Hochschule on Advanced Pixel Silicon Detectors for the CMS Detector.” (University of Kansas (lead), University of Illinois-Chicago, University of Puerto Rico, Kansas State University); UNL (Aaron Dominguez, PI). $2.5 M/5 years Fermilab: “Using Pixel Clusters to Form Track Stubs:Summer LPC Project.” PI: Aaron Dominguez. $15.5k for summer 2006. NSF “Experimental Particle Physics.” (Claes, Snow, Bloom, Dominguez) $191,000/year for three years. Submitted Proposal: EPSCor DOE:“The Luminosity Measurement for the DZERO experiment at Fermilab.” $137,000/year for three years requested. (for graduate student and a postdoc support through the end of the Tevatron run in 2009 or 2010).

19. PhD Students Supervised D. Johnston T.Kelly (co-advises w/ Bloom) J. Keller (co-advises w/ Claes) 2005 Spring 211H 1.89 Fall 211 1.74 2006 Spring 401 1.50 Fall 211 2.11 (2 sections) 2007 Spring 401 1.50 Fall 201H enthusiastic user of classroom technologies Some complaints about once/week schedule worked with the New Media Center to record all presentations for online podcasts Department Service Graduate Admissions Committee Undergraduate Advisor GAANN Committee HEP Search Committee Math/CSE PhD Brian Bockelman Postdocs M. Eads (FNAL) S. Malik (FNAL)

20. DZERO • With postdoc Mike Eads, using tracking to improve the jet resolution. • Have shown we can gain about a 10% improvement in the jet resolution • With Dale Johnston improving Higgs searches using a Matrix Element technique. • From cross sections for signal and background construct probabilities that a given • set of jet and lepton 4-vectors are consistent with either signal or background. • CMS Forward Pixel Detector • Group’s massive effort of testing and characterizing plaquettes now complete! • Aaron is the new Deputy Level-2 Manager of the Fpix. • 2008 will mark the installation and commissioning of the Fpix detector in CMS • Tracking and Vertex Reconstruction with CMS • The novel technique developed as a summer LPC project with Tony Kelly and Jason Keller • (“Pixel Stubs”) is now officially part of the default reconstruction code of CMS. • LPC B-Id Group • Named co-convenor of the LPC B Identification Group • commissioning the b-tag algorithms when collisions begins.

21. BEST (Bilingual English Speaking Tutors) The educational outreach program for Latino elementary school students is in its 2nd year (at Elliott Elementary) 20 English language learner elementary school children work with 15 bilingual high school students (and one UNL student) on homework, reading and math for one hour twice a week after school. Hired new part time staff person, Amber Wilber, to coordinate activities. Discussions with directors Miguel Carranza and Gustavo Carlo to coordinate/merge with the Latino Achievement Mentoring Program (LAMP) to create a continuous mentorship program (BEST serving elementary students, LAMP serving middle and high school students) with UNL anchoring the program.

22. Kees Uiterwaal Ph.D. 1994, Utrecht Joined UNL: October, 2001 Surgery for brain tumor – December 2005 Medical Leave: Spring 2006 Approval of 1 year deferral in tenure decision date – Now Fall 2007 CURRENT SUPPORT 6/2004–5/2008 “Inside a Focused Laser Beam: Molecular Dynamics,” NSF Awarded $437k 5/2007–5/2008 “Inside a Focused Laser Beam: Molecular Dynamics,” NSF REU Awarded $5k PENDING PROPOSALS 6/2008–5/2011 “Dynamics of atoms and molecules in intense ultrashort fields: Quantitative study of molecular ionization, Optical orbital angular momentum,” NSF, $780k (pending) 7/2008–6/2010 Temporal lenses for femtosecond and attosecond electron microscopy, Nebraska Research Initiative, $173k (pending, admitted to next round)

23. Published 2007 Barwick B, Corder C, Strohaber J, Chandler-Smith N, Uiterwaal C, and Batelaan H “Laser-induced ultrafast electron emission from a field emission tip” New J. Phys. 9(5) 142.1–10 (2007) Strohaber J, Petersen C, and Uiterwaal C J G J, “Efficient angular dispersion compensation in holographic generation of intense ultrashort paraxial beam modes” Opt. Lett.32(16) 2387–2389 (2007) Hilbert S A, Barwick B, Fabrikant M, Uiterwaal C J G J, and Batelaan H “A high repetition rate time-of-flight electron energy analyzer”Appl. Phys. Lett.91(17), 173506.1–3 (2007) Strohaber J, Scarborough T, and Uiterwaal C J G J “Ultrashort intense-field optical vortices produced with laser-etched mirrors”Appl. Opt.46(36) 8583–8590 (2007) Strohaber J and Uiterwaal C J G J “In situ measurement of three-dimensional ion densities in focused femtosecond pulses” Phys. Rev. Lett.100(2) 023002 (2008) [was accepted in 2007]

24. Invited Paper Strohaber, Mariyenko I, and Uiterwaal C J G J “ Generation and diagnosis of focused ultrashort pulses of complex light” Proc. SPIE Vol. 6483 “Complex Light and Optical Forces” Eds: Andrews D L, Galvez E J, and Nienhuis G, March 2007) Invited Talk Uiterwaal C J G J “Femtosecond optical vortices: how to make them and what to do with them” Invited talk at the Optoelectronics 2007 - Complex Light and Optical Forces (OE20) conference, part of the SPIE conference “Photonics West 2007”, San Jose, CA, USA (20–25 January 2007), 25 January 2007. Invited Review Batelaan H and Uiterwaal C J G J “Tip-top imaging” Nature (News & Views)446, 500–501 (2007)

25. 8 February 2008 Phys. Rev. Lett. 100, 23002 (2008) was identified as an Editors’Choice PHYSICS:Profiles in Charge The availability of high-power lasers emitting intense pulses over femtosecond and picosecond time scales enables the study of high-field processes such as photo-dissociation and photo-excition of atoms and molecules in the laboratory. Such processes are relevant across a range of disciplines, from the study of photoinduced chemical reactions in the atmosphere to the more fundamental probing of the electronic excitations in atoms. When an intense laser pulse hits a cloud of atoms or molecules, the intensity profile of the laser pulse will produce a specific distribution of ions. After exciting a cloud of Xe atoms with intense laser pulses, Strohaber and Uiterwaal implement a time-of-flight technique that samples the pulse focal region with micrometer resolution, allowing the distribution of ions to be mapped out in three dimensions. On the flip side, the profile of the ion distributions can be used as an intensity sensor to aid the characterization and optimization of intense laser pulses. -- ISO Phys. Rev. Lett. 100, 23002 (2008).

26. That same article will be featured in a Springer textbook by Prof. Ingolf Hertel, Director of the Max-Born-Institut. In his draft, Hertel refers to the work as a "recht schoenes ... Experiment", i.e. a "truly beautiful ...experiment"

27. Uiterwaal - Teaching 2002 Spring 212H 1.83 Fall 212H 2003 Spring 212 2.22 Fall 212 2.07 2004 Spring 461/861 1.29 Fall 212H 1.53 2005 Spring 461/861 1.13 Fall 212 1.86 2006 Fall 212H 2.10 2007 Spring 461/861 1.25 Fall 212H 1.00 Supervising 3 graduate students J. Strohaber C. Peterson T. Scarborough Responses in all categories: 1.0 - 1.50