Experimental realization of a ballistic spin interferometer based on the Rashba effect using a nanolithographically defined square loop array

Koga, Takaaki; Sekine, Yoshiaki; Nitta, Junsaku

Physical Review B, 2006, 74(4), 041302

Permalink : https://hdl.handle.net/2115/14613

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アクセス権	open access
URI	https://hdl.handle.net/2115/14613
タイトル	Experimental realization of a ballistic spin interferometer based on the Rashba effect using a nanolithographically defined square loop array
著者	Koga, Takaaki ; Sekine, Yoshiaki ; Nitta, Junsaku
e-Rad_Researcher 30374614 著者名 Koga, Takaaki
著者名 Sekine, Yoshiaki
著者名 Nitta, Junsaku
言語	英語
発行日	2006-07
出版者	American Physical Society
収録物名	Physical Review B
巻(号)	74(4)
ページ	041302
抄録	We succeeded in observing gate-controlled electron spin interference in nanolithographically defined square loop arrays that were fabricated in In0.52Al0.48As/In0.53Ga0.47As/In0.52Al0.48As quantum wells (QWs). In this experiment, we demonstrated electron spin precession in ballistic channels within the QW that is caused by the Rashba effect. It turned out that the spin precession angle θ was gate controllable by more than 0.75π for a length of 1.5 µm. Thus, the demonstration of the large controllability of θ by the applied gate voltage was carried out in a more direct way using spin interference of an electron wave function than the conventional beating analysis of the Shubnikov–de Haas oscillations.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright ©2006 American Physical Society
PISSN	0163-1829
EISSN	1095-3795
関連情報	URI http://www.aps.org/
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevB.74.041302