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Heat‐driven spin currents on large scales
Author(s) -
Brechet Sylvain D.,
Ansermet JeanPhilippe
Publication year - 2011
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201105180
Subject(s) - thermophoresis , temperature gradient , thermochemistry , thermoelectric effect , current (fluid) , spin (aerodynamics) , thermodynamics , chemistry , diffusion , condensed matter physics , physics , thermal , quantum mechanics , nanofluid
Using a three‐current model (i.e. heat, spin‐up and spin‐down electrons) the thermodynamics of irreversible processes predicts that a temperature gradient gives rise to a spin current on large scales, in particular under the conditions used to measure the spin Seebeck effect. Diffusive currents on large scales are common in thermochemistry. The proportionality between the diffusion current and the gradient of the chemical potential is known as the Soret effect or thermophoresis. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)