Heat-induced damping modification in YIG/Pt hetero-structures

M. B. Jungfleisch; T. An; K. Ando; Y. Kajiwara; K. Uchida; V. I. Vasyuchka; A. V. Chumak; A. A. Serga; E. Saitoh; B. Hillebrands

doi:10.1063/1.4792701

Heat-induced damping modification in YIG/Pt hetero-structures

Mesoscale and Nanoscale Physics 2013-09-26 v1 Materials Science

Authors: M. B. Jungfleisch , T. An , K. Ando , Y. Kajiwara , K. Uchida , V. I. Vasyuchka , A. V. Chumak , A. A. Serga , E. Saitoh , B. Hillebrands

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Abstract

We experimentally demonstrate the manipulation of magnetization relaxation utilizing a temperature difference across the thickness of an yttrium iron garnet/platinum (YIG/Pt) hetero-structure: the damping is either increased or decreased depending on the sign of the temperature gradient. This effect might be explained by a thermally-induced spin torque on the magnetization precession. The heat-induced variation of the damping is detected by microwave techniques as well as by a DC voltage caused by spin pumping into the adjacent Pt layer and the subsequent conversion into a charge current by the inverse spin Hall effect.

Keywords

spin transport magnetization thermal properties of materials

Cite

@article{arxiv.1212.2073,
  title  = {Heat-induced damping modification in YIG/Pt hetero-structures},
  author = {M. B. Jungfleisch and T. An and K. Ando and Y. Kajiwara and K. Uchida and V. I. Vasyuchka and A. V. Chumak and A. A. Serga and E. Saitoh and B. Hillebrands},
  journal= {arXiv preprint arXiv:1212.2073},
  year   = {2013}
}

Heat-induced damping modification in YIG/Pt hetero-structures

Abstract

Keywords

Cite

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