Spin-orbit interaction and phase coherence in lithographically defined bismuth wires

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dc.contributorVirginia Techen
dc.contributor.authorRudolph, M.en
dc.contributor.authorHeremans, Jean J.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.issued2011-05-18en
dc.description.abstractWe present low-temperature magnetoresistance measurements on lithographically defined bismuth wires. The phase-coherence time and the spin-orbit scattering time are obtained by analysis of weak antilocalization, with values for the phase-coherence time supported by analysis of the universal conductance fluctuations present in the wires. We find that the phase-coherence time is dominated by electron-phonon scattering above approximate to 2 K and saturates below that temperature, with saturation delayed to a lower temperature in wider wires. The spin-orbit scattering time shows a weak temperature dependence above 2 K, and also shows a dependence on wire width. The spin-orbit scattering time increases as the width is reduced, as is also observed in wires fabricated from spin-orbit coupled two-dimensional systems in semiconductor heterostructures. The similarity is discussed in light of weak antilocalization in the two-dimensional strongly spin-orbit coupled Bi(001) surface states.en
dc.description.sponsorshipU.S. Department of Energy DOE DE-FG02-08ER46532en
dc.identifier.citationRudolph, M. ; Heremans, J. J., May 18, 2011. "Spin-orbit interaction and phase coherence in lithographically defined bismuth wires," PHYSICAL REVIEW B 83(20): 205410. DOI: 10.1103/PhysRevB.83.205410en
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.83.205410en
dc.identifier.issn1098-0121en
dc.identifier.urihttp://hdl.handle.net/10919/25413en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.83.205410en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectelectron-electron interactionen
dc.subjectuniversal conductance fluctuationsen
dc.subjectsmallen
dc.subjectenergy transfersen
dc.subjectweak-localizationen
dc.subjectdisordered metalsen
dc.subjectmagnetic-fieldsen
dc.subjectnanowire arraysen
dc.subjectquantum wiresen
dc.subjectthin-filmsen
dc.subjectmagnetoresistanceen
dc.subjectPhysicsen
dc.titleSpin-orbit interaction and phase coherence in lithographically defined bismuth wiresen
dc.title.serialPhysical Review Ben
dc.typeArticle - Refereeden

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