Finite-temperature spectroscopy of 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 complements conventional electrical transport measurement in characterizing 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.

*This work is supported by a Simons Investigator Award to Leo Radzihovsky from the Simons Foundation. Y.-Z.C. is also supported in part by the Laboratory for Physical Sciences and in part by JQI-NSF-PFC (supported by NSF grant PHY-1607611)

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Presenters

  • Tzu-Chi Hsieh

    • Physics, University of Colorado Boulder

Authors

  • Tzu-Chi Hsieh

    • Physics, University of Colorado Boulder

  • Yang-Zhi Chou

    • Physics, University of Maryland College Park
    • Condensed Matter Theory Center, Joint Quantum Institute, and Department of Physics, University of Maryland College Park

  • Leo R Radzihovsky

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