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SUMMARY:Fractal superconductivity near localization threshold - Prof. Mikh
 ail Feigel'man\, Landau Institute
DTSTART:20081107T153000Z
DTEND:20081107T163000Z
UID:TALK13187@talks.cam.ac.uk
CONTACT:Dr Jonathan Keeling
DESCRIPTION:I will present a theory of a pseudogap state appearing near th
 e\nsuperconductor-insulator transition in strongly disordered metals with\
 nattractive interaction. Such an interaction combined with the fractal\nna
 ture of the single particle wave functions near the mobility edge leads\nt
 o an anomalously large single particle gap in the superconducting state\nn
 ear SI transition that persists and even increases in the insulating\nstat
 e long after the superconductivity is destroyed. Analytic expressions\nfor
  the value of the pseudogap in terms of the inverse participation ratio\no
 f the corresponding localization problem.\n
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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