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SUMMARY:Expanding the topological insulator horizon - Nicholas P. Butch\, 
 Lawrence Livermore National Laboratory\, Livermore\, CA
DTSTART:20120718T101500Z
DTEND:20120718T111500Z
UID:TALK38837@talks.cam.ac.uk
CONTACT:Michael Sutherland
DESCRIPTION:The field of topological insulators\, materials that harbor sy
 mmetry-protected electronic conducting states with novel properties\, is e
 xperiencing 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.\nI will describe efforts to grapple with the very real exper
 imental challenges in isolating the conduction of topological states in Bi
 2Se3\, arguably the most approachable of the topological insulators.  In a
 ddition\, I will talk about the experimental search for topological surfac
 e states in other classes of materials\, including the Half Heuslers and K
 ondo insulators\, which are broadening our understanding of topology in co
 ndensed matter systems.\n\n
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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