Topological surface states: A new type of 2d electron systems

M. Zahid Hasan, Su Yang Xu, David Hsieh, L. Andrew Wray, Yuqi Xia

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Abstract

    Topological Surface States (TSS) represent new types of two dimensional electron systems with novel and unprecedented properties distinct from any quantum Hall-like or spin-Hall effects. Their topological order can be realized at room temperatures without magnetic fields and they can be turned into magnets, exotic superconductors or Kondo insulators leading to worldwide interest and activity in the topic. We review the basic concepts defining such topological matter and the key experimental probe that revealed the Z2 topological order in the bulk of these spin-orbit interaction dominated insulators. This review focuses on the key results that demonstrated the fundamental topological properties such as spin-momentum locking, non-trivial Berrys phases, mirror Chern number, absence of backscattering, protection by time-reversal and other discrete (mirror) symmetries and their remarkable persistence up to the room temperature elaborating on results first discussed by M.Z. Hasan and C.L. Kane in the Rev. of Mod. Phys., 82, 3045 (2010). Additionally, key results on broken symmetry phases such as quantum magnetism and uperconductivity induced in topological materials are briefly discussed

    Original languageEnglish (US)
    Title of host publicationTopological Insulators
    PublisherElsevier B.V.
    Pages143-174
    Number of pages32
    ISBN (Print)9780444633149
    DOIs
    StatePublished - 2013

    Publication series

    NameContemporary Concepts of Condensed Matter Science
    Volume6
    ISSN (Print)1572-0934

    Keywords

    • Berry's phase
    • Chern number
    • Quantum hall effects
    • Topological insulators
    • Topological surface states

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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