Interface electronic structure at the topological insulator–ferrimagnetic insulator junction
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Ross_Interface elec tronic.pdf
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414.95 KB
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Checksum (MD5)
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Author(s)
Kubota, Y
Murata, K
Miyawaki, J
Ozawa, K
Shirasawa, T
Feng, B
Yamamoto, Sh
Liu, R-Y
Yamamoto, S
Mahatha, S K
Date Issued
December 2016
Journal
Journal of Physics: Condensed Matter
Publisher
IOP Publishing
Citation
Kubota, Y et al. “Interface Electronic Structure at the Topological Insulator–ferrimagnetic Insulator Junction.” Journal of Physics: Condensed Matter 29, 5 (December 2016): 055002 © 2016 IOP Publishing Ltd
Version
Original manuscript
Abstract
An interface electron state at the junction between a three-dimensional topological insulator film, Bi₂Se₃, and a ferrimagnetic insulator film, Y₃Fe₅O₁₂ (YIG), was investigated by measurements of angle-resolved photoelectron spectroscopy and x-ray absorption magnetic circular dichroism. The surface state of the Bi₂Se₃ film was directly observed and localized 3d spin states of the Fe ³⁺ in the YIG film were confirmed. The proximity effect is likely described in terms of the exchange interaction between the localized Fe 3d electrons in the YIG film and delocalized electrons of the surface and bulk states in the Bi₂Se₃ film.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1088/1361-648X/29/5/055002
