Journal Article

PreJuSER-55483

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Suppression of weak antilocalization in GaxIn1-xAs/InP narrow quantum wires

Schäpers, T.FZJ* ; Guzenko, V.FZJ* ; Pala, M. G.FZJ* ; Zülicke, U. ; Governale, M. ; Knobbe, J.FZJ* ; Hardtdegen, H.FZJ*

2006
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/7669  doi:10.1103/PhysRevB.74.081301

Abstract: The magnetoconductivity of GaxIn1-xAs/InP quantum wires with widths in the range of 1220-250 nm was investigated. The finite zero-field spin splitting in our samples gives rise to spin relaxation and weak antilocalization in wide wires. In contrast, for the narrow wires, only weak-localization behavior is seen even though the zero-field spin splitting is independent of wire width. The observed renormalization of the spin-relaxation length due to purely geometrical effects can be described quantitatively using a model where the effect of spin precession is represented by spin-dependent pseudomagnetic fluxes, and by exact numerical transport calculations.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut für Halbleiterschichten und Bauelemente (ISG-1)
2. Center of Nanoelectronic Systems for Information Technology (CNI)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2006

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