Changes of Magnetism in a Magnetic Insulator due to Proximity to a Topological Insulator

Tao Liu; James Kally; Timothy Pillsbury; Chuanpu Liu; Houchen Chang; Jinjun Ding; Yang Cheng; Maria Hilse; Roman Engel-Herbert; Anthony Richardella; Nitin Samarth; Mingzhong Wu

doi:10.1103/PhysRevLett.125.017204

Changes of Magnetism in a Magnetic Insulator due to Proximity to a Topological Insulator

Tao Liu
, James Kally
, Timothy Pillsbury
, Chuanpu Liu
, Houchen Chang
, Jinjun Ding
, Yang Cheng
, Maria Hilse
, Roman Engel-Herbert
, Anthony Richardella
, Nitin Samarth
, Mingzhong Wu

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

32 Scopus citations

Abstract

We report the modification of magnetism in a magnetic insulator Y3Fe5O12 thin film by topological surface states (TSS) in an adjacent topological insulator Bi2Se3 thin film. Ferromagnetic resonance measurements show that the TSS in Bi2Se3 produces a perpendicular magnetic anisotropy, results in a decrease in the gyromagnetic ratio, and enhances the damping in Y3Fe5O12. Such TSS-induced changes become more pronounced as the temperature decreases from 300 to 50 K. These results suggest a completely new approach for control of magnetism in magnetic thin films.

Original language	English (US)
Article number	017204
Journal	Physical review letters
Volume	125
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.125.017204
State	Published - Jul 3 2020

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.125.017204

Cite this

@article{ea4ba33b057d4649b3a0ff4abe154c6e,

title = "Changes of Magnetism in a Magnetic Insulator due to Proximity to a Topological Insulator",

abstract = "We report the modification of magnetism in a magnetic insulator Y3Fe5O12 thin film by topological surface states (TSS) in an adjacent topological insulator Bi2Se3 thin film. Ferromagnetic resonance measurements show that the TSS in Bi2Se3 produces a perpendicular magnetic anisotropy, results in a decrease in the gyromagnetic ratio, and enhances the damping in Y3Fe5O12. Such TSS-induced changes become more pronounced as the temperature decreases from 300 to 50 K. These results suggest a completely new approach for control of magnetism in magnetic thin films.",

author = "Tao Liu and James Kally and Timothy Pillsbury and Chuanpu Liu and Houchen Chang and Jinjun Ding and Yang Cheng and Maria Hilse and Roman Engel-Herbert and Anthony Richardella and Nitin Samarth and Mingzhong Wu",

note = "Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = jul,

day = "3",

doi = "10.1103/PhysRevLett.125.017204",

language = "English (US)",

volume = "125",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - Changes of Magnetism in a Magnetic Insulator due to Proximity to a Topological Insulator

AU - Liu, Tao

AU - Kally, James

AU - Pillsbury, Timothy

AU - Liu, Chuanpu

AU - Chang, Houchen

AU - Ding, Jinjun

AU - Cheng, Yang

AU - Hilse, Maria

AU - Engel-Herbert, Roman

AU - Richardella, Anthony

AU - Samarth, Nitin

AU - Wu, Mingzhong

PY - 2020/7/3

Y1 - 2020/7/3

N2 - We report the modification of magnetism in a magnetic insulator Y3Fe5O12 thin film by topological surface states (TSS) in an adjacent topological insulator Bi2Se3 thin film. Ferromagnetic resonance measurements show that the TSS in Bi2Se3 produces a perpendicular magnetic anisotropy, results in a decrease in the gyromagnetic ratio, and enhances the damping in Y3Fe5O12. Such TSS-induced changes become more pronounced as the temperature decreases from 300 to 50 K. These results suggest a completely new approach for control of magnetism in magnetic thin films.

AB - We report the modification of magnetism in a magnetic insulator Y3Fe5O12 thin film by topological surface states (TSS) in an adjacent topological insulator Bi2Se3 thin film. Ferromagnetic resonance measurements show that the TSS in Bi2Se3 produces a perpendicular magnetic anisotropy, results in a decrease in the gyromagnetic ratio, and enhances the damping in Y3Fe5O12. Such TSS-induced changes become more pronounced as the temperature decreases from 300 to 50 K. These results suggest a completely new approach for control of magnetism in magnetic thin films.

UR - https://www.scopus.com/pages/publications/85087885006

UR - https://www.scopus.com/pages/publications/85087885006#tab=citedBy

U2 - 10.1103/PhysRevLett.125.017204

DO - 10.1103/PhysRevLett.125.017204

M3 - Article

C2 - 32678653

AN - SCOPUS:85087885006

SN - 0031-9007

VL - 125

JO - Physical review letters

JF - Physical review letters

IS - 1

M1 - 017204

ER -

Changes of Magnetism in a Magnetic Insulator due to Proximity to a Topological Insulator

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this