Effect of Fe atomic layers at the ferromagnet-semiconductor interface on temperature-dependent spin transport in semiconductors

Yamada, M.; Shiratsuchi, Y.; Kambe, H. et al.

Journal of Applied Physics, 2021, 129(18), 183901

アクセス数:274件（2025-05-23 11:06 集計）

固定URL: https://hdl.handle.net/11094/89958

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タイトル
Effect of Fe atomic layers at the ferromagnet-semiconductor interface on temperature-dependent spin transport in semiconductors
著者
NRID
1000050778529 1000050778529
ORCID
0000-0002-9623-9926 0000-0002-9623-9926
researchmap permalink
YamadaMichihiro YamadaMichihiro
Scopus Author ID
57212378385 57212378385
著者名
Yamada, M.
NRID
1000070379121 1000070379121
ORCID
0000-0002-8938-4869 0000-0002-8938-4869
researchmap permalink
read0090304 read0090304
Scopus Author ID
6602197167 6602197167
著者名
Shiratsuchi, Y.
著者名
Kambe, H.
著者名
Kudo, K.
著者名
Yamada, S.
NRID
1000090409376 1000090409376
著者名
Sawano, K.
NRID
1000060314374 1000060314374
researchmap permalink
read0068619 read0068619
Scopus Author ID
7005234924 7005234924
著者名
Nakatani, R.
NRID
1000090401281 1000090401281
ORCID
0000-0002-5473-6086 0000-0002-5473-6086
researchmap permalink
read0102192 read0102192
Scopus Author ID
9244846800 9244846800
著者名
Hamaya, K.
内容
M. Yamada, Y. Shiratsuchi, H. Kambe, K. Kudo, S. Yamada, K. Sawano, R. Nakatani, and K. Hamaya, Journal of Applied Physics 129, 183901 (2021); https://doi.org/10.1063/5.0048321.
抄録
Using artificially controlled ferromagnet (FM)-semiconductor (SC) interfaces, we study the decay of the nonlocal spin signals with increasing temperature in SC-based lateral spin-valve devices. When more than five atomic layers of Fe are inserted at the FM/SC interfaces, the temperature-dependent spin injection/detection efficiency (P inj /det) can be interpreted in terms of the T3/2 law, meaning a model of the thermally excited spin waves in the FM electrodes. For the FM/SC interfaces with the insufficient insertion of Fe atomic layers, on the other hand, the decay of P inj /det is more rapid than the T3/2 curve. Using magneto-optical Kerr effect measurements, we find that more than five atomic layers of Fe inserted between FM and SC enable us to enhance the ferromagnetic nature of the FM/SC heterointerfaces. Thus, the ferromagnetism in the ultra-thin FM layer just on top of SC is strongly related to the temperature-dependent nonlocal spin transport in SC-based lateral spin-valve devices. We propose that the sufficient ferromagnetism near the FM/SC interface is essential for high-performance FM-SC hybrid devices above room temperature.
出版者
American Institute of Physics
収録物名
Journal of Applied Physics
巻(号)
129(18)
ページ
183901
刊行年月
2021-05-10
言語
英語
ハンドルURL
https://hdl.handle.net/11094/89958
PISSN
00218979
eISSN
10897550
NCID
AA00693547
関連情報 (isIdenticalTo)
DOI (出版社版)
https://doi.org/10.1063/5.0048321
アクセス権
open access
権利情報
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in M. Yamada, Y. Shiratsuchi, H. Kambe, K. Kudo, S. Yamada, K. Sawano, R. Nakatani, and K. Hamaya, Journal of Applied Physics 129, 183901 (2021) and may be found at https://doi.org/10.1063/5.0048321.
出版タイプ
Version of Record
カテゴリ
学術雑誌論文 Journal Article