Probing Spin-Relaxation Anisotropy in 1D InSb Wires by Weak Anti-Localization

Journal Article · Mon Dec 26 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3671707· OSTI ID:22004019

Cairns, S; Keay, J; Murphy, S Q; Gaspe, C K; Mishima, T D; Santos, M B ^[1]

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1. Homer L. Dodge Department of Physics and Astronomy, Center for Semiconductor Physics in Nanostructures (C-SPIN), University of Oklahoma, Norman, OK (United States)

Arrays of quasi-one-dimensional wires were fabricated in symmetrically doped AlInSb/InSb heterostructures to investigate the dimensional suppression of electron spin relaxation. Using weak localization analysis, it was discovered that the spin relaxation length in 300nm wide wires was enhanced by 40% relative to the two-dimensional value. Moreover, wires aligned along the <100> direction showed spin relaxation lengths {approx}30% longer than for wires aligned along <110>. This anisotropy is consistent with the additional influence of the cubic Dresselhaus interaction along the <110> direction which is predicted to be unaffected by dimensional confinement.

• OSTI ID: 22004019
• Journal Information: AIP Conference Proceedings, Vol. 1416, Issue 1; Conference: NGS15: 15. international conference on narrow gap systems, Blacksburg, VA (United States), 1-5 Aug 2011; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
ANISOTROPY
CRYSTAL STRUCTURE
DOPED MATERIALS
ELECTRONS
HETEROJUNCTIONS
INDIUM ANTIMONIDES
INTERFACES
MOLECULAR BEAM EPITAXY
ONE-DIMENSIONAL CALCULATIONS
RELAXATION
SEMICONDUCTOR MATERIALS
SPIN
TWO-DIMENSIONAL CALCULATIONS