Surface States on Topological Insulators: Angle-Resolved Photoemission Spectroscopy Studies

ORAL

Abstract

We have studied the electronic structure of several topological insulators using high resolution Angle-Resolved Photoemission Spectroscopy. We have observed two types of metallic surface states: a) pairs of spin-orbit split states with opposite spin chirality and b) unpaired spin chiral state. Through the adsorption of various atomic/molecular species, we were able to vary the filling, tune the spin-orbit coupling and alter the spin texture of these states.

*This work was supported by DOE

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Authors

  • Tonica Valla

    • Brookhaven National Laboratory

  • Z.-H Pan

    • Brookhaven National Laboratory
    • Brookaven National Laboratory

  • Peter Johnson

    • Brookhaven National Laboratory, Upton, NY
    • BNL
    • Brookhaven National Laboratory
    • Brookhaven National Lab
    • Brookaven National Laboratory

  • D. Gardner

    • MIT

  • S. Chu

    • MIT

  • Y. S. Lee

    • MIT

  • Rongwei Hu

    • Brookaven National Laboratory

  • Cedomir Petrovic

    • Brookaven National Laboratory