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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1434
DTSTART:20090312T150000Z
DURATION:PT1H0M0S
DTSTAMP:20260506T181228Z
LAST-MODIFIED:20090304T153444Z
LOCATION:5310 Chamberlin
SUMMARY:Coulomb Correlations and the Wigner-Mott Scenario for the 2D-M
 IT\, R. G. Herb Condensed Matter Seminar\, Vladimir Dobrosavljevic\, F
 lorida State University
DESCRIPTION:Significant experimental advances over the past ten years 
 have provided beautiful and convincing evidence for the existence of a
  sharp metal-insulator transition (MIT) in the two-dimensional 2D elec
 tron gases (2DEG). The best evidence for a sharp MIT is found in the c
 leanest samples\, suggesting that key experimental features can all be
  understood by deliberately disregarding disorder\, and focusing on in
 teraction effects alone: viewing the quantum melting of a Wigner cryst
 al as the fundamental mechanism for the MIT in a sufficiently clean 2D
 EG. A theory describing this phenomenon will be presented\, which prov
 ides a natural explanation of several puzzling experimental features\,
  including the large effective mass enhancement\, the large resistivit
 y drop on the metallic side\, and the giant magneto-resistance in pres
 ence of a parallel magnetic field.
URL:https://www.physics.wisc.edu/events/?id=1434
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