BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1869
DTSTART:20100924T210000Z
DURATION:PT1H0M0S
DTSTAMP:20260317T150244Z
LAST-MODIFIED:20100913T144124Z
LOCATION:2241 Chamberlin Hall (coffee at 3:30 pm)
SUMMARY:Bose Condensation\, Superfluidity\, and the Quantum Hall Effec
 t\, Physics Department Colloquium\, Jim Eisenstein\, Caltech
DESCRIPTION:Composite particles consisting of an even number of fermio
 ns(e.g. 4He atoms) can pretend to be bosons.  Bosons\, of course\, can
  Bose condense and do remarkable things.  Superconductivity\, which is
  certainly remarkable when you stop to think about it\, result(sort of
 ) from the Bose condensation of electron pairs.  With this in mind\, t
 heorists have speculated since the early 1960s that excitons (electron
 -hole pairs in a semiconductor) might be able to do the same thing. <b
 r>
\n <br>
\nIn this talk I will describe experiments done at Caltech 
 on a special collection of excitons that exists in equilibrium and doe
 s indeed show many (but not all) of the expected signs of excitonic su
 perfluidity.  Surprisingly\, the system in question is a double layer 
 two dimensional electron gas.  With no valence band holes in sight\, w
 here do the excitons come from?
URL:https://www.physics.wisc.edu/events/?id=1869
END:VEVENT
END:VCALENDAR