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SUMMARY:Spin Currents in Ferromagnet / Normal Metal Hybrids
DTSTART:20131129T141500
DTSTAMP:20260509T165825Z
UID:9aefbbdaff64e09b70ba7180b0f60d0b0bc93cb3a68a1e6474cb10e8
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Sebastian Goennenwein\, Walther-Meissner-Institut\, Bayeri
 sche Akademie der Wissenschaften\, Garching\, Germany\nA pure spin current
  – i.e.\, the directed flow of spin angular momentum – is a fascinatin
 g manifestation of spin physics in the solid state. In ferromagnet/normal 
 metal hybrid bilayers\, pure spin currents can be generated\, e.g.\, by me
 ans of spin pumping [1]\, or via the application of thermal gradients in t
 he so-called spin Seebeck effect [2]. An elegant scheme for detecting spin
  currents relies on the inverse spin Hall effect: because of spin-orbit co
 upling\, a spin current also induces a charge current\, which then can be 
 detected using conventional electronics [1\,2].\nIn the talk\, I will intr
 oduce and compare our recent experimental investigations of spin current-r
 elated phenomena in ferromagnet/normal metal hybrid devices [3-6]. Our res
 ults show that spin current generation is possible from both electrically 
 conductive as well as electrically insulating ferromagnets (so-called ferr
 omagnetic insulators). I will address the spatially resolved spin Seebeck 
 effect experiments which we have performed in ferro¬¬magnetic insulator/
 normal metal thin film hybrid structures\, and discuss a novel magneto-res
 istance effect arising from the interplay between spin and charge currents
  in these structures.\nReferences:\n[1] O. Mosendz et al.\, Phys. Rev. Let
 t. 104\, 046601 (2010).\n[2] K. Uchida et al.\, Nature Mater. 9\, 894 (201
 0).\n[3] F. D. Czeschka et al.\, Phys. Rev. Lett. 107\, 046601 (2011).\n[4
 ] M. Weiler et al.\, Phys. Rev. Lett. 108\, 106602 (2012).\n[5] H. Nakayam
 a et al.\, Phys. Rev. Lett. 110\, 206601 (2013).\n[6] M. Weiler et al.\, P
 hys. Rev. Lett. 111\, 176601 (2013).
LOCATION:PH L1 503 http://plan.epfl.ch/?room=PHL1503
STATUS:CONFIRMED
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