Effect of electron-phonon interaction on the velocity renormalization of the surface state of 3D topological insulator

ORAL

Abstract

Explicitly taking into account of electron-phonon interaction, we consider the velocity renormalization of the surface state of 3D topological insulator. The velocity renormalization is shown to be strongly dependent on the carrier density of the system. We compare our theoretical calculation to recent experimental data. We further consider the correction to the compressibility arising from electron-phonon coupling, and discuss its implication in experiments.

*This work is supported by ONR-MURI, LPS- CMTC, and NRI-SWAN.

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Authors

  • Qiuzi Li

    • University of Maryland-College Park

  • Sankar Das Sarma

    • The University of Maryland, College Park
    • University of Maryland-College Park
    • Condensed Matter Theory Center, University of Maryland
    • Condensed Matter Theory Center and Joint Quantum Institute, University of Maryland, College Park