Spin and phase coherence lengths in n-InSb quasi-one-dimensional wires

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dc.contributorVirginia Techen
dc.contributor.authorKallaher, R. L.en
dc.contributor.authorHeremans, Jean J.en
dc.contributor.authorGoel, N.en
dc.contributor.authorChung, S. J.en
dc.contributor.authorSantos, M. B.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.issued2010-01-15en
dc.description.abstractWe present measurements of the magnetoconductance of quasi-one-dimensional wires fabricated on a two-dimensional electron system in an InSb/InAlSb heterostructure. The width and temperature dependence of the spin and phase coherence lengths in the narrow wires are examined by analyzing the magnetoconductance in antilocalization theory, modified to account for ballistic transport. The experiments indicate that the confined geometry can enhance spin coherence lengths in systems not in the motional narrowing regime and in the presence of strong cubic Dresselhaus spin-orbit interaction. Experimentally, the spin coherence lengths are found to be inversely proportional to wire width and to display a weak temperature dependence. For all wire widths the phase coherence length, after correction for finite length effects, shows a temperature dependence indicative of phase decoherence via the one-dimensional Nyquist mechanism.en
dc.description.sponsorshipDOE DE-FG02-08ER46532en
dc.description.sponsorshipNSF DMR-0618235, DMR-0520550en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKallaher, R. L. ; Heremans, J. J. ; Goel, N. ; et al., Jan 15, 2010. "Spin and phase coherence lengths in n-InSb quasi-one-dimensional wires," PHYSICAL REVIEW B 81(3): 035335. DOI: 10.1103/PhysRevB.81.035335en
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.81.035335en
dc.identifier.issn1098-0121en
dc.identifier.urihttp://hdl.handle.net/10919/25411en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.81.035335en
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject2-dimensional electron-gasen
dc.subjectof-flight experimenten
dc.subjectweak-localizationen
dc.subjectquantum-wellsen
dc.subjectorbit interactionen
dc.subjectsuperconducting fluctuationsen
dc.subjectconduction electronsen
dc.subjectthin-filmsen
dc.subjectmagnetoresistanceen
dc.subjectchannelsen
dc.subjectPhysicsen
dc.titleSpin and phase coherence lengths in n-InSb quasi-one-dimensional wiresen
dc.title.serialPhysical Review Ben
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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