My primary research interests include Nanomagnetism and Quantum Spintronics with a focus on searching, fundamentally understanding and fabricating novel magnetic materials and quantum spintronic devices. Some of research programs in my group are listed as below.
To study magnetic thin films with extremely high magnetic anisotropy, giant saturation magnetization and high spin polarization ratio and find new ways to make such materials applicable for future information, biomedical and green energy technologies.
To study magnetic nanoparticles and nanoparticle-assemblies with new properties and novel physical configurations (e.g. single-nanoparticle-based heterostructures, nanoparticle-crystals, nanoparticle-based nanocomposite) and find new ways to make such materials for biomedical magnetic sensing/imaging and magnetic hyperthermia and nanoparticle-based quantum spintronic devices.
To purse fundamental understanding of new spintronic phenomenon and design and fabricate novel spintronic devices such as spin-based memory, spin-based logic device and system and quantum computing bits and gates.
To investigate and implement magnetic- and spintronic-based personalized biomedical devices and systems.
Awards & Recognition
2006 Information Storage Industry Consortium (INSIC) Technical Achievement Award
2010 Outstanding Professor for Undergraduate Teaching, College of Science and Engineering, University of Minnesota
2012 Distinguished McKnight University Professorship, University of Minnesota
2014 Titans of Technology – Inventor (Minneapolis-St. Paul Business Journal)
2014-2016 Centennial Chair in Electrical and Computer Engineering
2015 IEEE Fellow for contributions to magnetic material and spintronic devices for magnetic recording, information processing and biomedical applications
2016 Robert F. Hartmann Chair in Electrical and Computer Engineering
Director of Center for Spintronic Materials, Interfaces and Novel Architectures (C-SPIN); NSF Materials Research Science and Engineering Center; Center for Micromanetics and Information Technologies; Graduate Faculty – Dept. of Physics; Graduate Faculty – Dept. of Chemical Engineering and Materials Science; Graduate Faculty – Dept. of Biomedical Engineering
Professor, College of Science and Engineering
PhD, Physics, Institute of Physics in Beijing, China, 1995
MS, Physics, Lanzhou University, Lanzhou, China, 1992
BS, Physics, Lanzhou University, Lanzhou, China, 1989
“Giant Spin Pumping and Inverse Spin Hall Effect in the Presence of Surface and Bulk Spin?Orbit Coupling of Topological Insulator Bi2Se3”, Nano Letters 15 (10), 7126 (2015), (with M. Jamali, J. S. Lee, J. S. Jeong, F. Mahfouzi, Y. Lv, Z. Y. Zhao, B. K. Nikoli?, K. A. Mkhoyan, N. Samarth)
“Magnetic Tunnel Junction-Based Spintronic Logic Units Operated by Spin Transfer Torque”, IEEE TRANSACTION ON NANOTECHNOLOGY, 11, 120 (2012) (with X. Yao, J. Harms, A. Lyle, F. Ebrahimi, Y. Zhang)
“Fabrication of Fe16N2 Films by Sputtering Process and Experimental Investigation of Origin of Giant Saturation Magnetization in Fe16N2”, IEEE TRANSACTIONS ON MAGNETICS, 48, 1710 (2012), (with N. Ji, X. Liu, Y. Xu, C. S?nchez-Hanke, F.M.F. de Groot, Y. Wu, L. F. Allard and E. Lara-Curzio)
“Integration of Spintronic Interface for Nanomagnetic Arrays”, AIP ADVANCE, 1, 042177 (2011) (with A. Lyle, J. Harms, T. Klein, A. Lentsch, A. Klemm, D. Martens)
“Competition-based Nanomagnetic Assay for the Quantification of Low-abundance Protein Biomarkers in Unprocessed Human Sera”, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 132 (12), 4388-4392 (2010) (with Y. P. Li, B. Srinivasan, Y. Jing, X. Yao, M.A. Hugger, C. Xing)
“A GMR Sensor- and Magnetic Nanoparticle-based Detecting System of Zeptomol (10-21 mol) Sensitivity: An Integrated Platform Potentially Leading to Personalized Medicine”, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 48 (15): 2764–2767 (2009), (with B. Srinivasan, Y. P. Li, Y. Jing, Y. H. Xu, X. F. Yao, C. Xing)
“FePt Magnetic Nanoparticles and their Assemblies for Future Magnetic Media”, PROCEEDINGS of IEEE, Invited Paper in Special Issue on Advances of Magnetic Storage Technologies, vol. 96, 1847(2008)
“Tuning the Crystal Structure and Magnetic Properties of FePt Nanomagnets”, ADVANCED MATERIALS, 19 (13), 1703 (2007) (with J. M. Qiu)
“Spin Transfer in Nanomagnetic Devices with Perpendicular Anisotropy”, APPLIED PHYSICS LETTERS 88 (17): 72506 (2006) (with H. Meng)
“Composite Free Layer for High Density Magnetic Random Access Memory with Lower Spin Transfer Current”, APPLIED PHYSICS LETTERS 89 (15): 152509 (2006) (with H. Meng)
“A Spintronics Full Adder for Magnetic CPU”, IEEE Electron Device Letters, 26, 360 (2005) (with H. Meng and J. Wang)