Dr. Kawakami is a Professor of Physics at The Ohio State University (OSU) and a Research Physicist at University of California, Riverside (UCR). He was an assistant professor from 2002-2009, associate professor from 2009-2011, and full professor from 2011-2013 at UCR. He moved to OSU in 2013 as a full professor and supervises research at both OSU and UCR. He did post-doctoral research at University of California, Santa Barbara from 1999-2002. His post-doctoral advisors were D. Awschalom and A. Gossard. He received his Ph.D. degree in Physics from University of California, Berkeley in 1999 under advisory of Z. Qiu. Dr. Kawakami is the lead PI of NRI-NSF Nanoelectronics Beyond 2020 project “Developing a graphene spin computer: materials, nano-devices, modeling, and circuits.” His pioneering and innovative contributions include the first demonstration of tunneling spin injection into graphene leading to efficient spin injection and long spin lifetimes ; forefront experiments on spin relaxation in graphene [2-4]; manipulation of pure spin currents in graphene via scattering by magnetic moments ; optical pump-probe spectroscopy of spin dynamics in semiconductors [6-7]; first demonstration of electric field control of Verwey transition in magnetite films ; development of a unique MBE system with in situ magnetotransport measurements to investigate doping effects on spin and charge transport in 2D materials [3, 10].
|1.||W. Han, K. Pi, K. M. McCreary, Y. Li, J. J. I. Wong, A. G. Swartz, and R. K. Kawakami, “Tunneling spin injection into single layer graphene,” Phys. Rev. Lett. 105, 167202 (2010).|
|2.||W. Han, and R. K. Kawakami, “Spin relaxation in single-layer and bilayer graphene,” Phys. Rev. Lett. 107, 047207 (2011).|
|3.||K. Pi, W. Han, K. M. McCreary, A. G. Swartz, Y. Li, and R. K. Kawakami, “Manipulation of spin transport in graphene by surface chemical doping,” Phys. Rev. Lett. 104, 187201 (2010).|
|4.||W. Han, J. Chen, D. Wang, K. M. McCreary, H. Wen, A. G. Swartz, J. Shi, and R. K. Kawakami, “Spin relaxation in single-layer graphene with tunable mobility,” Nano Lett. 12, 3443 (2012).|
|5.||K. M. McCreary, A. G. Swartz, W. Han, J. Fabian, R. K. Kawakami, “Magnetic moment formation in graphene detected by scattering of pure spin currents,” arXiv:1206.2628.|
|6.||Y. Li, W. Han, A. G. Swartz, K. Pi, J. J. I. Wong, S. Mack, D. D. Awschalom, and R. K. Kawakami, “Oscillatory spin polarization and magneto-optical Kerr effect in Fe3O4 thin films on GaAs(001) ,” Phys. Rev. Lett. 105, 167203 (2010).|
|7.||Z. Yang, Y. Li, D. C. Look, H. M. Zhou, W. V. Chen, R. K. Kawakami, P. K. L. Yu, and J. L. Liu, “Thermal annealing effect on spin coherence in ZnO single crystals,” J. Appl. Phys. 110, 016101 (2011).
|8.||R. K. Kawakami, Y. Kato, M. Hanson, I. Malajovich, J. M. Stephens, E. Johnston-Halperin, G. Salis, A. C. Gossard, and D. D. Awschalom, “Ferromagnetic imprinting of nuclear spins in semiconductors,” Science 294, 131 (2001).|
|9.||J. J. I. Wong, A. G. Swartz, R. Zheng, W. Han, and R. K. Kawakami, “Electric field control of the verwey transition and induced magnetoelectric effect in magnetite,” Phys. Rev. B (Rapid Communications), in press, arXiv:1202.6460.|
|10.||K. Pi, K. M. McCreary, W. Bao, W. Han, Y. F. Chiang, Y. Li, S.W. Tsai, C. N. Lau, and R. K. Kawakami, “Electronic doping and scattering by transition metals on graphene,” Phys. Rev. B 80, 075406 (2009).|