Symmetry Rules Shaping Spin-Orbital Textures in Surface States

ORAL

Abstract

A complete understanding of a surface state subject to strong spin-orbit coupling requires mapping all of its key degrees of freedom. We study topological insulators using spin- and angle-resolved photoemission to elucidate the rules that couple an orbital texture to a spin texture. From this, we demonstrate where in a material's band structure one should expect an orbital-dependent spin texture, and where a surface state can have a single, orbital-independent spin texture.

*U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract No. DE-AC02-05CH11231.

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Authors

  • Chiu-Yun Lin

    • University of California at Berkeley

  • Kenneth Gotlieb

    • University of California at Berkeley

  • Zhenglu Li

    • University of California at Berkeley

  • Chris Jozwiak

    • Advanced Light Source, Lawrence Berkeley National Laboratory

  • Ji Hoo Ryoo

    • Seoul National University

  • Cheol-Hwan Park

    • Seoul National University

  • Zahid Hussain

    • Advanced Light Source, Lawrence Berkeley National Laboratory

  • Steven G. Louie

    • University of California at Berkeley

  • Alessandra Lanzara

    • University of California at Berkeley