Numerical study on the spin Seebeck effect

Jun Ichiro Ohe, Hiroto Adachi, Saburo Takahashi, Sadamichi Maekawa

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Thermally driven spin-wave spin current in a ferromagnetic material (FM) and the resulting electric signal in a normal metal (NM) probe placed on the FM are theoretically investigated by taking into account the fluctuation- dissipation theorem for thermally fluctuating spin at the interface of an FM-NM junction. We develop a numerical technique for calculating the spin Seebeck signal detected by the NM probe, which converts spin current to charge current by the inverse spin Hall effect. The spin current is induced in the NM probe via an exchange interaction when the FM senses the temperature gradient. Numerical simulation clarifies the role of the sample boundary in the spatial distribution of spin current in both FM and NM.

Original languageEnglish
Article number115118
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number11
DOIs
Publication statusPublished - Mar 11 2011
Externally publishedYes

Fingerprint

Seebeck effect
Ferromagnetic materials
ferromagnetic materials
Metals
metals
Spin Hall effect
probes
Spin waves
Exchange interactions
Induced currents
Thermal gradients
Spatial distribution
magnons
Hall effect
temperature gradients
spatial distribution
dissipation
theorems
Computer simulation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Numerical study on the spin Seebeck effect. / Ohe, Jun Ichiro; Adachi, Hiroto; Takahashi, Saburo; Maekawa, Sadamichi.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 83, No. 11, 115118, 11.03.2011.

Research output: Contribution to journalArticle

Ohe, Jun Ichiro ; Adachi, Hiroto ; Takahashi, Saburo ; Maekawa, Sadamichi. / Numerical study on the spin Seebeck effect. In: Physical Review B - Condensed Matter and Materials Physics. 2011 ; Vol. 83, No. 11.
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