Heat-induced damping modification in yttrium iron garnet/platinum 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 yttrium iron garnet/platinum 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

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

We experimentally demonstrate the manipulation of magnetization relaxation utilizing a temperature difference across the thickness of an yttrium iron garnet/platinum 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.

Original language	English
Article number	062417
Journal	Applied Physics Letters
Volume	102
Issue number	6
DOIs	https://doi.org/10.1063/1.4792701
Publication status	Published - 2013 Feb 11
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4792701

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title = "Heat-induced damping modification in yttrium iron garnet/platinum hetero-structures",

abstract = "We experimentally demonstrate the manipulation of magnetization relaxation utilizing a temperature difference across the thickness of an yttrium iron garnet/platinum 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.",

author = "Jungfleisch, {M. B.} and T. An and K. Ando and Y. Kajiwara and K. Uchida and Vasyuchka, {V. I.} and Chumak, {A. V.} and Serga, {A. A.} and E. Saitoh and B. Hillebrands",

note = "Funding Information: We thank G. A. Melkov and Y. Tserkovnyak for valuable discussions and R. Neb for the platinum film deposition. Financial support by the Deutsche Forschungsgemeinschaft within the projects SE 1771/4-1 (Priority Program 1538 Spin Caloric Transport) and CH 1037/1-1 is gratefully acknowledged.",

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AU - Jungfleisch, M. B.

AU - An, T.

AU - Ando, K.

AU - Kajiwara, Y.

AU - Uchida, K.

AU - Vasyuchka, V. I.

AU - Chumak, A. V.

AU - Serga, A. A.

AU - Saitoh, E.

AU - Hillebrands, B.

N1 - Funding Information: We thank G. A. Melkov and Y. Tserkovnyak for valuable discussions and R. Neb for the platinum film deposition. Financial support by the Deutsche Forschungsgemeinschaft within the projects SE 1771/4-1 (Priority Program 1538 Spin Caloric Transport) and CH 1037/1-1 is gratefully acknowledged.

PY - 2013/2/11

Y1 - 2013/2/11

N2 - We experimentally demonstrate the manipulation of magnetization relaxation utilizing a temperature difference across the thickness of an yttrium iron garnet/platinum 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.

AB - We experimentally demonstrate the manipulation of magnetization relaxation utilizing a temperature difference across the thickness of an yttrium iron garnet/platinum 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.

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Heat-induced damping modification in yttrium iron garnet/platinum hetero-structures

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