Strongly exchange-coupled and surface-state-modulated magnetization dynamics in Bi2Se3/yttrium iron garnet heterostructures

Y. T. Fanchiang; K. H. M. Chen; C. C. Tseng; C. C. Chen; C. K. Cheng; S. R. Yang; C. N. Wu; S. F. Lee; M. Hong; J. Kwo

doi:10.1038/s41467-017-02743-2

Nature Communications (Jan 2018)

Strongly exchange-coupled and surface-state-modulated magnetization dynamics in Bi2Se3/yttrium iron garnet heterostructures

Y. T. Fanchiang,
K. H. M. Chen,
C. C. Tseng,
C. C. Chen,
C. K. Cheng,
S. R. Yang,
C. N. Wu,
S. F. Lee,
M. Hong,
J. Kwo

Affiliations

Y. T. Fanchiang: Department of Physics, National Taiwan University
K. H. M. Chen: Department of Physics, National Tsing Hua University
C. C. Tseng: Department of Physics, National Tsing Hua University
C. C. Chen: Department of Physics, National Tsing Hua University
C. K. Cheng: Department of Physics, National Taiwan University
S. R. Yang: Department of Physics, National Tsing Hua University
C. N. Wu: Department of Physics, National Tsing Hua University
S. F. Lee: Institute of Physics, Academia Sinica
M. Hong: Department of Physics, National Taiwan University
J. Kwo: Department of Physics, National Tsing Hua University

DOI: https://doi.org/10.1038/s41467-017-02743-2
Journal volume & issue: Vol. 9, no. 1
pp. 1 – 9

Abstract

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Understanding the effects of topological insulators on magnetization dynamics of adjacent magnetic materials is essential for novel spintronic devices. Here, Fanchiang et al. report thickness dependence of interfacial in-plane magnetic anisotropy and damping enhancement in Bi2Se3/yttrium iron garnet (YIG) bilayers, indicating an important role of topological surface states in the magnetization dynamics of YIG.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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