Spin and phase coherence lengths in InAs wires with diffusive boundary scattering

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dc.contributorVirginia Techen
dc.contributor.authorKallaher, R. L.en
dc.contributor.authorHeremans, Jean J.en
dc.contributor.authorVan Roy, W.en
dc.contributor.authorBorghs, G.en
dc.contributor.departmentPhysicsen
dc.date.accessed2013-12-18en
dc.date.accessioned2014-02-11T13:46:02Zen
dc.date.available2014-02-11T13:46:02Zen
dc.date.issued2013-11-07en
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.en
dc.description.sponsorshipU.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering_DOE DE-FG02-08ER46532en
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.88.205407en
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.88.205407en
dc.identifier.issn1098-0121en
dc.identifier.urihttp://hdl.handle.net/10919/25410en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.88.205407en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectweak-localizationen
dc.subjectorbit interactionen
dc.subjectconduction electronsen
dc.subjectquantum-wellsen
dc.subjectthin-filmsen
dc.subjectantilocalizationen
dc.subjectbehavioren
dc.subjectlayersen
dc.subjectwidthen
dc.subjectfielden
dc.titleSpin and phase coherence lengths in InAs wires with diffusive boundary scatteringen
dc.title.serialPhysical Review Ben
dc.typeArticle - Refereeden

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