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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-7937
DTSTART:20221215T160000Z
DTEND:20221216T000000Z
DTSTAMP:20260414T113530Z
LAST-MODIFIED:20221212T211133Z
LOCATION:5310 Chamberlin
SUMMARY:Monolayers and bilayers of the topological semimetal WTe2\, R.
  G. Herb Condensed Matter Seminar\, David Cobden\, U Washington
DESCRIPTION:Layered transition metal chalcogenides have a wide range o
 f electronic properties\, and many can readily be exfoliated down to a
  single monolayer as long as they are kept in an inert atmosphere. In 
 the last few years we have been experimenting with one of these\, WTe2
 \, which in the bulk is a semimetal having topological features in its
  band structure. Monolayers of WTe2 exhibit the edge conduction proper
 ties expected of a two-dimensional topological insulator\, although th
 e transport properties of the insulating state are puzzling and sugges
 tive of strong electron-hole correlations competing with a superconduc
 ting pairing instability. Bilayers show intermediate properties betwee
 n the monolayer and the metallic bulk\, and additionally exhibit slidi
 ng ferroelectricity. A number of other interesting phenomena have been
  associated with this many-faced material in the literature. I will de
 scribe our current state of understanding of few layer WTe2 and our at
 tempts to couple it to other 2D materials\, including 2D magnets and g
 raphene.
URL:https://www.physics.wisc.edu/events/?id=7937
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