Li, Mingda ORCID: 0000-0002-7055-6368, Cui, Wenping ORCID: 0000-0002-9900-5092, Yu, Jin ORCID: 0000-0003-1074-2465, Dai, Zuyang, Wang, Zhe ORCID: 0000-0003-4103-0751, Katmis, Ferhat, Guo, Wanlin and Moodera, Jagadeesh (2015). Magnetic proximity effect and interlayer exchange coupling of ferromagnetic/topological insulator/ferromagnetic trilayer. Phys. Rev. B, 91 (1). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Li, MingdaUNSPECIFIEDorcid.org/0000-0002-7055-6368UNSPECIFIED
Cui, WenpingUNSPECIFIEDorcid.org/0000-0002-9900-5092UNSPECIFIED
Yu, JinUNSPECIFIEDorcid.org/0000-0003-1074-2465UNSPECIFIED
Dai, ZuyangUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, ZheUNSPECIFIEDorcid.org/0000-0003-4103-0751UNSPECIFIED
Katmis, FerhatUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guo, WanlinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Moodera, JagadeeshUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-414399
DOI: 10.1103/PhysRevB.91.014427
Journal or Publication Title: Phys. Rev. B
Volume: 91
Number: 1
Date: 2015
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9969
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
TOPOLOGICAL INSULATOR; SURFACE; STATES; MAGNETORESISTANCE; DIAMAGNETISM; CONFINEMENTMultiple languages
Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed MatterMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/41439

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