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SUMMARY:Field-induced p-wave Superconductivity in Mesoscopic Systems - Pro
 f Fuchun Zhang\, Zhou Guangzhao Professor in Natural Sciences at Hong Kong
  University
DTSTART:20120511T143000Z
DTEND:20120511T153000Z
UID:TALK37780@talks.cam.ac.uk
CONTACT:Dr G Moller
DESCRIPTION:By using Bogoliubov-de Gennes (BdG) equations\, we study super
 conducting (SC) states in a quasi 2-dimensional system of radius $R$. It i
 s shown that no vortices exist in s-wave SC samples with $R smaller R_c ~ 
 xi(0)$\, the T=0 coherence length. We predict that chiral p-wave states ex
 hibit superconductivity for $R smaller R_c$ only in the presence of a vort
 ex with opposite chirality. This _induced_ SC phase is a consequence of no
 n-zero chirality of the pairing order parameter and implies the presence o
 f chiral edge currents. Our study may be applied to sharply probing the pa
 iring symmetry of unconventional superconductors.
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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