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
N1 - Publisher Copyright:
© 2020 American Physical Society.
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 - http://www.scopus.com/inward/record.url?scp=85087885006&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85087885006&partnerID=8YFLogxK
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 -