Spin pumping by parametrically excited exchange magnons

C. W. Sandweg; Y. Kajiwara; A. V. Chumak; A. A. Serga; V. I. Vasyuchka; M. B. Jungfleisch; E. Saitoh; B. Hillebrands

doi:10.1103/PhysRevLett.106.216601

Spin pumping by parametrically excited exchange magnons

C. W. Sandweg, Y. Kajiwara, A. V. Chumak, A. A. Serga, V. I. Vasyuchka, M. B. Jungfleisch, E. Saitoh, B. Hillebrands

Advanced Institute for Materials Research (AIMR)

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

206 Citations (Scopus)

Abstract

We experimentally show that exchange magnons can be detected by using a combination of spin pumping and the inverse spin-Hall effect proving its wavelength integrating capability down to the submicrometer scale. The magnons were injected in a ferrite yttrium iron garnet film by parametric pumping and the inverse spin-Hall effect voltage was detected in an attached Pt layer. The role of the density, wavelength, and spatial localization of the magnons for the spin pumping efficiency is revealed.

Original language	English
Article number	216601
Journal	Physical review letters
Volume	106
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.106.216601
Publication status	Published - 2011 May 23

ASJC Scopus subject areas

Physics and Astronomy(all)

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AU - Kajiwara, Y.

AU - Chumak, A. V.

AU - Serga, A. A.

AU - Vasyuchka, V. I.

AU - Jungfleisch, M. B.

AU - Saitoh, E.

AU - Hillebrands, B.

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AB - We experimentally show that exchange magnons can be detected by using a combination of spin pumping and the inverse spin-Hall effect proving its wavelength integrating capability down to the submicrometer scale. The magnons were injected in a ferrite yttrium iron garnet film by parametric pumping and the inverse spin-Hall effect voltage was detected in an attached Pt layer. The role of the density, wavelength, and spatial localization of the magnons for the spin pumping efficiency is revealed.

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