Effects of Dephasing on Spin Lifetime in Ballistic Spin-Orbit Materials

Aron W. Cummings, Stephan Roche

    Research output: Contribution to journalArticleResearchpeer-review

    23 Citations (Scopus)

    Abstract

    © 2016 American Physical Society. We theoretically investigate spin dynamics in spin-orbit-coupled materials. In the ballistic limit, the spin lifetime is dictated by dephasing that arises from energy broadening plus a nonuniform spin precession. For the case of clean graphene, we find a strong anisotropy with spin lifetimes that can be short even for modest energy scales, on the order of a few ns. These results offer deeper insight into the nature of spin dynamics in graphene, and are also applicable to the investigation of other systems where spin-orbit coupling plays an important role.
    Original languageEnglish
    Article number086602
    JournalPhysical Review Letters
    Volume116
    Issue number8
    DOIs
    Publication statusPublished - 23 Feb 2016

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