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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-2349
DTSTART:20120322T050000Z
DURATION:PT1H0M0S
DTSTAMP:20260420T062446Z
LAST-MODIFIED:20120321T121406Z
LOCATION:CANCELLED
SUMMARY:Quantum and classical fluctuation phenomena in low-dimensional
  superconductors\, R. G. Herb Condensed Matter Seminar\, Victor Galits
 ki\, University of Maryland -- CANCELLED
DESCRIPTION:Low-dimensional superconductivity provides a unique area i
 n which a fascinating variety of novel and fundamental phenomena occur
 . In this talk\, I will review recent theoretical and experimental wor
 k on superconducting fluctuation phenomena in low-dimensional supercon
 ductors. First\, I will discuss unusual phases and fluctuation effects
  evident in the experimental studies of the field-tuned transition in 
 two-dimensional disordered superconducting films and describe our theo
 ry of quantum superconducting fluctuations\, which explains anomalous 
 transport and thermal transport observed in the vicinity of the transi
 tion in these films. Next\, I will focus on the recent experiment by t
 he Penn State group [Wang et al.\, Nature Physics 6\, 389 (2010)] on t
 he long-range proximity effect in ferromagnetic nanowires proximity-co
 upled to superconducting electrodes. I will propose an explanation for
  both the anomalously-strong proximity effect and the mysterious resis
 tance peak that preempts the superconducting transition in this experi
 ment. In conclusion\, I will discuss this and related setups involving
  ferromagnetic nanowires in the context of one-dimensional topological
  superconductors.
URL:https://www.physics.wisc.edu/events/?id=2349
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