Finite-temperature spectroscopy in dirty helical Luttinger liquids

ORAL

Abstract

I will discuss a theory of finite-temperature momentum-resolved tunneling spectroscopy (MRTS) for disordered two-dimensional INTERACTING topological-insulator edges. The MRTS setup measures the spectral properties and THUS provides a complementary way (distinct from transport) to characterize helical Luttinger liquid edges of topological insulators. The (exact within bosonization) finite-temperature spectral function and the tunneling current of MRTS are derived in the presence of disorder and interaction. The theory provides a detailed analytical characterization of MRTS between helical edges, that should be of interest for corresponding experimental studies.

*Supported by the Simons Investigator Award through the James Simons Foundation (to LR)

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Presenters

  • Tzu-Chi Hsieh

    • Department of Physics, University of Colorado, Boulder

Authors

  • Tzu-Chi Hsieh

    • Department of Physics, University of Colorado, Boulder

  • Yang-Zhi Chou

    • University of Maryland
    • Physics, University of Maryland College Park
    • Department of Physics, University of Maryland, College Park

  • Leo Radzihovsky

    • University of Colorado, Boulder
    • Department of Physics, University of Colorado, Boulder