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SUMMARY:Spin Hall Effect - Guang-Yu Guo\, National Taiwan University\,
DTSTART:20140724T131500Z
DTEND:20140724T141500Z
UID:TALK53521@talks.cam.ac.uk
CONTACT:Gareth Conduit
DESCRIPTION:Spin Hall effect (SHE) refers to the generation of transverse 
 spin current in non-magnetic solids by an applied electric field due to re
 lativistic spin-orbit coupling. Spin current generation\, detection and ma
 nipulation are three key elements of the emerging spintronics. Large room 
 temperature SHE not only provides dissipationless spin current but also is
  used to probe spin current and to drive magneto-electronic devices with l
 ittle power consumption. Recent intensive research on SHE has also led us 
 to such topical fields as topological insulators and spin caloritronics. I
 n this talk\, I will first give an overview on SHE. This will be followed 
 by a presentation of my own theoretical investigations on SHE\, including 
 Berry phase theory and ab initio relativistic band structure method [1\,2]
 \, large intrinsic SHE in metals [2-3] and gigantic SHE due to multi-orbit
 al Kondo effect in gold with iron impurities [4-5].\n\n[1] G. Y. Guo\, Y. 
 Yao and Q. Niu\, Phys. Rev. Lett. 94\, 226601 (2005)\n\n[2] G. Y. Guo\, S.
  Murakami\, T. W. Chen\, and N. Nagaosa\, Phys. Rev. Lett. 100\, 096401 (2
 008)\n\n[3] G. Y. Guo\, J. Appl. Phys. 105\, 07C701 (2009)\n\n[4] G. Y. Gu
 o\, S. Maekawa\, and N. Nagaosa\, Phys. Rev. Lett. 102\, 036401 (2009)\n\n
 [5] B. Gu\, J.-Y. Gan\, N. Bulut\, T. Ziman\, G. Y. Guo\, N. Nagaosa and S
 . Maekawa\, Phys. Rev. Lett. 105\, 086401 (2010).
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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