• Ph.D. in 1994 from the University of Illinois at Urbana-Champaign

Research Interests:

Professor Shi is an experimental condensed matter physicist interested in the magnetic, electronic and superconducting properties of materials. The materials his group studies include nanoscale magnetic structures made by lithography and self-assembly, ferromagnetic semiconductors, ferromagnetic/organic hybrid structures, two- and three-dimensional metallic photonic crystals. His group employs transport and magneto-transport, neutron scattering, x-ray magnetic circular dichorism, as well as magnetometry.

Selected Recent Publications

• Systematic Study of the Magnetization Reversal of Patterned Nanolines (with W.C. Uhlig), Appl. Phys. Lett. 84, 759 (2004).
• Giant Magnetoresistance in Organic Spin-Valves (with Z.H. Xiong, D. Wu and Z.V. Vardeny), Nature 427, 821, (2004).
• Polarized Neutron Reflectivity Study of Digital Ferromagnetic Heterostructures (with M. Diwekar, J.A. Borchers, E. Johnston-Halperin and D.D. Awschalom), J. Appl. Phys. 9, 6509 (2004).
• Optical and Magneto-Optical Studies of Two-Dimensional Hole Arrays in Cobalt Films (with M. Diwekar, V.P. Kamaev and Z.V. Vardeny), Appl. Phys. Lett. 84, 3112 (2004).
• Temperature Dependence of Switching Field Fluctuations in Patterned Nanostructures (with H. T. Wang, S. T. Chui and A. Oriade), Phys. Rev. B 69, 064417 (2004).
• Element Resolved Spin Configurations of Ferromagnetic GaMnAs (with D. Keavney, Di Wu, J. W. Freeland, Z. Johnston-Halperin,and D.D. Awschalom), Phys. Rev. Lett. 91, 187203 (2003).
• Temperature-Dependent Switching Properties in Patterned 200nm NiFe Structures (with J. Li and S. Tehrani), Appl. Phys. Lett. 79, 3821 (2001).
• Geometry Dependence of Magnetization Vortices in Patterned Magnetic Elements (with S. Tehrani and M.R. Scheinfein), Appl. Phys. Lett. 76, 2588 (2000).
• The Sign of Thermoelectric Power in Co/Cu and Fe/Cr Multilayers (E. Yu. Tsymbal, D.G. Pettifor, and M.B. Salamon), Phys. Rev. B (Rapid Communications), 59, 8371 (1999).
• Magnetization Vortices and Anomalous Switching in Patterned Submicron Structures (with S. Tehrani, T. Zhu, Y.F. Zheng and J.-G. Zhu), Appl. Phys. Lett. 74, 2525 (1999).
• · Field-Dependent Thermoelectric Power and Thermal Conductivity in Multilayered and Granular Giant Magnetoresistive Systems (with K. Pettit, E, Kita, S.S.P. Parkin, R. Nakatani and M.B. Salamon), Phys. Rev. B 54, 15273 (1996).
• Magnetic Clusters in Molecular Beams, Metals and Semiconductors (with S. Gider, K. Babcock and D.D. Awschalom), Science 271, 937 (1996).
• Assembly of Submicron Ferromagnets in GaAs Semiconductors (with J. Kikkawa, R. Proksch, T. Schaeffer, G. Medeiros-Ribeiro and P.M. Petroff, and D.D. Awschalom), Nature 377, 707 (1995).
• XY-Like Critical Behavior of the Thermodynamic and Transport Properties of YBa₂Cu₃O_7-x in Magnetic Fields near T_c (with M.B. Salamon, N. Overend, and M.A. Howson), Phys. Rev. B (Rapid Communications) 47, 5520 (1993).