Gate-controlled persistent spin helix state in (In,Ga)As quantum wells

URN to cite this document:: urn:nbn:de:bvb:355-epub-268016
DOI to cite this document:: 10.5283/epub.26801

Kohda, M. ; Lechner, Vera ; Kunihashi, Y. ; Dollinger, Tobias

; Olbrich, Peter ; Schönhuber, Christoph ; Caspers, Ines ; Belkov, Vassilij ; Golub, Leonid

; Weiss, Dieter

; Richter, Klaus ; Nitta, J. ; Ganichev, Sergey

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Date of publication of this fulltext: 22 Nov 2012 10:08

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Abstract

In layered semiconductors with spin-orbit interaction (SOI) a persistent spin helix (PSH) state with suppressed spin relaxation is expected if the strengths of the Rashba and Dresselhaus SOI terms, alpha and beta, are equal. Here we demonstrate gate control and detection of the PSH in two-dimensional electron systems with strong SOI including terms cubic in momentum. We consider strain-free ...