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

doi:10.1103/PhysRevB.74.041302


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

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/14613

Title:	Experimental realization of a ballistic spin interferometer based on the Rashba effect using a nanolithographically defined square loop array
Authors:	Koga, Takaaki Browse this author →KAKEN DB
	Sekine, Yoshiaki Browse this author
	Nitta, Junsaku Browse this author
Issue Date:	Jul-2006
Publisher:	American Physical Society
Journal Title:	Physical Review B
Volume:	74
Issue:	4
Start Page:	041302
Publisher DOI:	10.1103/PhysRevB.74.041302
Abstract:	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.
Rights:	Copyright ©2006 American Physical Society
Relation:	http://www.aps.org/
Type:	article
URI:	http://hdl.handle.net/2115/14613
Appears in Collections:	情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 古賀貴亮

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