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SUMMARY:Enhancement of Superconductivity by Anderson Localization - Gornyi
 \, I (Forschungszentrum Karlsruhe)
DTSTART:20120921T091000Z
DTEND:20120921T095000Z
UID:TALK39967@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:We study the influence of disorder on the temperature of super
 conducting transition within the sigma-model renormalization-group framewo
 rk. Electron-electron interaction in particle-hole and Cooper channels is 
 taken into account and assumed to be short range. The approach takes into 
 account mutual renormalization of disorder and all interaction constants (
 that\, in particular\, leads to mixing of different interaction channels).
  Two-dimensional systems in the weak localization and antilocalization reg
 ime\, as well as systems near mobility edge are considered. We demonstrate
  that in all these regimes Anderson localization leads to strong enhanceme
 nt of the critical temperature related to the multifractality of wave func
 tions. Screening of the long-range Coulomb interaction thus opens a promis
 ing direction for searching novel materials for high-temperature supercond
 uctivity.\n
LOCATION:Seminar Room 1\, Newton Institute
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