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Title: Absence of anomalous Nernst effect in spin Seebeck effect of Pt/YIG

The Pt/YIG structure has been widely used to study spin Seebeck effect (SSE), inverse spin Hall effect, and other pure spin current phenomena. However, the magnetic proximity effect in Pt when in contact with YIG, and the potential anomalous Nernst effect (ANE) may compromise the spin current phenomena in Pt/YIG. By inserting a Cu layer of various thicknesses between Pt and YIG, we have separated the signals from the SSE and that of the ANE. It is demonstrated that the thermal voltage in Pt/YIG mainly comes from spin current due to the longitudinal SSE with negligible contribution from the ANE.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ; ;  [3]
  1. National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093 (China)
  2. (United States)
  3. Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States)
  4. (China)
Publication Date:
OSTI Identifier:
22492394
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 1; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ELECTRIC POTENTIAL; FERRITE GARNETS; HALL EFFECT; IRON OXIDES; LAYERS; NERNST EFFECT; PLATINUM; POTENTIALS; PROXIMITY EFFECT; SEEBECK EFFECT; SIGNALS; SPIN; YTTRIUM COMPOUNDS