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dc.contributorVirginia Tech
dc.contributor.authorKallaher, R. L.
dc.contributor.authorHeremans, J. J.
dc.contributor.authorVan Roy, W.
dc.contributor.authorBorghs, G.
dc.date.accessioned2014-02-11T13:46:02Z
dc.date.available2014-02-11T13:46:02Z
dc.date.issued2013-11-07
dc.identifier.citationKallaher, R. L. ; Heremans, J. J. ; Van Roy, W. ; et al., Nov 7, 2013. "Spin and phase coherence lengths in InAs wires with diffusive boundary scattering," PHYSICAL REVIEW B 88(20): 205407. DOI: 10.1103/PhysRevB.88.205407
dc.identifier.issn1098-0121
dc.identifier.urihttp://hdl.handle.net/10919/25410
dc.description.abstractMeasurements of low-temperature magnetotransport in lithographic wires of submicron widths fabricated from high-mobility AlGaSb/InAs/AlGaSb two-dimensional electron system heterostructures are presented. The dependence of the spin and phase coherence lengths on wire width and diffusion constant is investigated by analyzing the conductance in low applied magnetic fields with antilocalization models. Predominantly diffusive boundary scattering is deduced from the magnitude and wire width dependence of the conductance. Diffusive boundary scattering leads to a diffusion constant decreasing with wire width and hence allows the dependence of spin coherence on wire width and diffusion constant to be investigated concurrently. The spin coherence lengths are experimentally found to be proportional to the ratio of the diffusion constant to wire width. The phase coherence lengths follow Nyquist decoherence for low-dimensional wires.
dc.description.sponsorshipU.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering_DOE DE-FG02-08ER46532
dc.language.isoen_US
dc.publisherAmerican Physical Society
dc.subjectweak-localization
dc.subjectorbit interaction
dc.subjectconduction electrons
dc.subjectquantum-wells
dc.subjectthin-films
dc.subjectantilocalization
dc.subjectbehavior
dc.subjectlayers
dc.subjectwidth
dc.subjectfield
dc.titleSpin and phase coherence lengths in InAs wires with diffusive boundary scattering
dc.typeArticle
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.88.205407
dc.date.accessed2013-12-18
dc.title.serialPhysical Review B
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.88.205407


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