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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-2039
DTSTART:20110310T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260420T134850Z
LAST-MODIFIED:20110301T134706Z
LOCATION:5310 Chamberlin
SUMMARY:Topological Insulators\, R. G. Herb Condensed Matter Seminar\,
  Liang Fu\, Harvard University
DESCRIPTION:Traditionally phases of matter are classified by spontaneo
 us symmetry breaking. The discovery of quantum Hall effect in 1980s le
 d to the concept of topological phases characterized by topological qu
 antum numbers. In the past few years\, new topological phases have bee
 n theoretically predicted and experimentally observed in band insulato
 rs at zero magnetic field. These topological insulators are characteri
 zed by topological invariants in the band structure. They have protect
 ed gapless surface states with Dirac dispersion. I will describe theor
 y of topological insulators\, prediction and observation of these new 
 phases in real materials\, and recent experiments on topological surfa
 ce states. I will end by describing recently observed superconductivit
 y in doped topological insulators and its implication for unconvention
 al pairing in spin-orbital coupled materials.
URL:https://www.physics.wisc.edu/events/?id=2039
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