Measurements of weak localization of graphene in inhomogeneous magnetic fields

N. Lindvall, Abhay Shivayogimath, A. Yurgens

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Weak localization in graphene is studied in inhomogeneous magnetic fields. To generate the inhomogeneous field, a thin film of type-II superconducting niobium is put in close proximity to graphene. A deviation from the ordinary quadratic weak localization behavior is observed at low fields. We attribute this to the inhomogeneous field caused by vortices in the superconductor. The deviation, which depends on the carrier concentration in graphene, can be tuned by the gate voltage. In addition, collective vortex motion, known as vortex avalanches, is observed through magnetoresistance measurements of graphene.
    Original languageEnglish
    JournalJ E T P Letters
    Volume102
    Issue number6
    Pages (from-to)367-371
    Number of pages5
    ISSN0021-3640
    DOIs
    Publication statusPublished - 2015

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