[黄昆论坛]第327期:Double-Resonant Raman Processes in Single Layer Graphe...
[黄昆论坛]第326期:Strategies toward High Efficiency Organic and Perovski...
[黄昆论坛]第325期:Piezotronics and Piezo-phototronics of Third Generatio...
[黄昆论坛]第324期:III-V Nanowires and Nanowire Devices Grown on Silicon ...
[黄昆论坛]第323期:Crystal Phase-Engineering of Novel Nanomaterials
[黄昆论坛]第322期: 等离激元光子学和纳米光学:超灵敏传感和纳米光波导研究
[黄昆论坛]第321期:New Physics and Model of Electrical Conduction of Pure...
[黄昆论坛]第320期:From Lead Halide Perovskites to Lead-Free Metal Halide...
第319期:氧化物的复杂磁畴结构:物理起源及其器件应用
第318期: Physics enabled by the discovery of spin-transfer torques
官方微信
友情链接

第317期:Spin Conversion Phenomena in Spintronics

2018-05-23

报告题目: Spin Conversion Phenomena in Spintronics

 

报告人: 大谷義近 (日本东京大学),2018 IEEE 卓越讲座

 

报告时间:2018年5月9日 (星期三) 下午 14:00

 

报告地点:中科院半导体研究所2号楼303A室

Abstract:
Since the discovery of giant magnetoresistance, spintronics research has been evolving and has reached a new phase in which the concept of spin currents, i.e., the flow of spin angular momenta, helps us understand various spintronics phenomena. These include all the recently discovered conversion phenomena, such as the direct and inverse spin Hall effects, spin Seebeck and Peltier effects, spin pumping, and the inverse Faraday effect. More recently, Rashba interfaces and the surface states of topological insulators were found to exhibit the so-called Edelstein effect, in which spin-momentum locking behavior brings about non-equilibrium spin accumulation.
These interface and surface effects thus provide an effective means of interconversion among spin, charge, and heat currents. Most of the above-mentioned spin conversion phenomena take place at simple nanoscale interfaces between two different types of materials (e.g., magnets, non-magnets, semiconductors, and insulators). These structures may enable us to advance spin-mediated interconversion among physical entities such as electricity, light, sound, vibration, and heat.
I will first give an introduction to the general spin-mediated spin-conversion processes and then will focus on magneto-electric spin conversion in conductive solids, including spin Hall effects and new conversion mechanisms: Edelstein effects arising at Rashba interfaces [1] and surface states of topological insulators [2], as discussed in a recently published progress article [3].
[1] S. Karube, K. Kondou, and Y. Otani, “Experimental observation of spin-to-charge current conversion at non-magnetic metal/Bi2O3 interfaces,” Appl. Phys. Exp., vol. 9, 033001, 2016.
[2] K. Kondou et al., “Fermi-level-dependent charge-to-spin current conversion by Dirac surface states of topological insulators,” Nature Phys., vol. 12, pp. 1027-1031, 2016.
[3] Y. Otani et al., “Spin Conversion on the nanoscale,” Nature Phys., vol. 13, pp. 829-832, 2017.

Biography:YoshiChika OTANI received the B.S., M.S., and Ph.D. degrees from Keio University, Japan, in 1984, 1986, and 1989. He was a research fellow at the Physics Department of Trinity College Dublin, the University of Dublin, Ireland (1989–1991), and a researcher at the Laboratoire Louis Néel, CNRS, France (1991–1992). He was an assistant professor at the Department of Physics, Keio University (1992–1995) and an associate professor at the Department of Materials Science, Tohoku University (1995–2002). In 2001?2004 he led the Quantum Nano-Scale Magnetics Research Team at the RIKEN Frontier Research System (FRS). In 2004 he became a professor at the Institute for Solid State Physics (ISSP), University of Tokyo. Since 2013 he has additionally been the leader of the Quantum Nano-Scale Magnetism Research Team at the RIKEN Center for Emergent Matter Science (CEMS).
Prof. Otani has published over 250 technical articles in peer-reviewed journals, including book chapters and review articles, and has given more than 100 invited and plenary presentations at international conferences. He has been coordinating the Nano Spin Conversion Science project, supported by the Japanese Ministry of Education, Culture, Sports, Science, and Technology, since 2014 to elucidate the interconversion mechanisms among phonons, photons, magnons, and electrons. He has been a committee member of Commission on Magnetism (C9) of the International Union of Pure and Applied Physics since 2011 and will become vice chair in 2018.



关于我们
下载视频观看
联系方式
通信地址

北京市海淀区清华东路甲35号 北京912信箱 (100083)

电话

010-82304210/010-82305052(传真)

E-mail

semi@semi.ac.cn

交通地图
版权所有 ? 中国科学院半导体研究所

备案号:京ICP备05085259号 京公网安备110402500052 中国科学院半导体所声明