Expanding the topological insulator horizon

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• Nicholas P. Butch, Lawrence Livermore National Laboratory, Livermore, CA
• Wednesday 18 July 2012, 11:15-12:15
• Mott Seminar Room, Cavendish Laboratory, Department of Physics.

If you have a question about this talk, please contact Michael Sutherland.

The field of topological insulators, materials that harbor symmetry-protected electronic conducting states with novel properties, is experiencing rapid growth. Much experimental attention has been focused on layered heavy-element narrow-gap semiconductors, in which the 2D states were first discovered and studied by surface sensitive probes. At the same time, theory has continued to explore topological phases in new classes of materials. I will describe efforts to grapple with the very real experimental challenges in isolating the conduction of topological states in Bi2Se3, arguably the most approachable of the topological insulators. In addition, I will talk about the experimental search for topological surface states in other classes of materials, including the Half Heuslers and Kondo insulators, which are broadening our understanding of topology in condensed matter systems.

This talk is part of the Quantum Matter Seminar series.

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