TY - JOUR
T1 - Magnetic proximity effect and interlayer exchange coupling of ferromagnetic/topological insulator/ferromagnetic trilayer
AU - Li, Mingda
AU - Cui, Wenping
AU - Yu, Jin
AU - Dai, Zuyang
AU - Wang, Zhe
AU - Katmis, Ferhat
AU - Guo, Wanlin
AU - Moodera, Jagadeesh
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/1/23
Y1 - 2015/1/23
N2 - The magnetic proximity effect between the topological insulator (TI) and ferromagnetic insulator (FMI) is considered to have great potential in spintronics. However, a complete determination of interfacial magnetic structure has been highly challenging. We theoretically investigate the interlayer exchange coupling of two FMIs separated by a TI thin film, and show that the particular electronic states of the TI contributing to the proximity effect can be directly identified through the coupling behavior between two FMIs, together with a tunability of the coupling constant. Such an FMI/TI/FMI structure not only serves as a platform to clarify the magnetic structure of the FMI/TI interface, but also provides insights in designing the magnetic storage devices with ultrafast response.
AB - The magnetic proximity effect between the topological insulator (TI) and ferromagnetic insulator (FMI) is considered to have great potential in spintronics. However, a complete determination of interfacial magnetic structure has been highly challenging. We theoretically investigate the interlayer exchange coupling of two FMIs separated by a TI thin film, and show that the particular electronic states of the TI contributing to the proximity effect can be directly identified through the coupling behavior between two FMIs, together with a tunability of the coupling constant. Such an FMI/TI/FMI structure not only serves as a platform to clarify the magnetic structure of the FMI/TI interface, but also provides insights in designing the magnetic storage devices with ultrafast response.
UR - https://www.scopus.com/pages/publications/84921729470
U2 - 10.1103/PhysRevB.91.014427
DO - 10.1103/PhysRevB.91.014427
M3 - 文章
AN - SCOPUS:84921729470
SN - 1098-0121
VL - 91
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 1
M1 - 014427
ER -