Third stable branch and tristability of nuclear spin polarizations in a single quantum dot system

Yamamoto, S.; Kaji, R.; Sasakura, H.; Adachi, S.

Third stable branch and tristability of nuclear spin polarizations in a single quantum dot system

Yamamoto, S.; Kaji, R.; Sasakura, H. et al.

Physical Review B, 2020, 101(24), 245424

Permalink : https://hdl.handle.net/2115/78974

このアイテムのアクセス数:593件（2026-08-17 17:20 集計）

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PhysRevB.101.245424	pdf	1.92 MB	772

論文情報

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アクセス権	open access
URI	https://hdl.handle.net/2115/78974
タイトル	Third stable branch and tristability of nuclear spin polarizations in a single quantum dot system
著者	Yamamoto, S. ; Kaji, R. ; Sasakura, H. ; Adachi, S.
e-Rad_Researcher 50270781 著者名 Yamamoto, S.
著者名 Kaji, R.
e-Rad_Researcher 90374595 著者名 Sasakura, H.
e-Rad_Researcher 10221722 著者名 Adachi, S.
言語	英語
発行日	2020-06-17
出版者	American Physical Society (APS)
収録物名	Physical Review B
巻(号)	101(24)
ページ	245424
抄録	Semiconductor quantum dots provide a spin-coupled system of an electron and nuclei via enhanced hyperfine interaction. We showed that the nuclear spin polarization in single quantum dots can have three stable branches under a longitudinal magnetic field. The states were accompanied by hysteresis loops around the boundaries of each branch with a change in the excitation condition. To explain these findings, we incorporated the electron spin relaxation caused by the nuclear spin fluctuation into the previously studied dynamic nuclear spin polarization mechanism. The model reproduces the features of nuclear spin polarization and the associated strong reduction in the observed electron spin polarization, and can refer to the tristability of nuclear spin polarization.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright (2020) by The American Physical Society.
PISSN	2469-9950
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevB.101.245424