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SUMMARY:Domain wall in a chiral p-wave superconductor: Majorana fermions a
 nd their transport properties - Dr Benjamin Beri\, University of Cambridge
DTSTART:20101111T141500Z
DTEND:20101111T151500Z
UID:TALK27569@talks.cam.ac.uk
CONTACT:Joe Bhaseen
DESCRIPTION:Superconductors with p+ip pairing symmetry are characterized b
 y chiral edge states. These states are difficult to detect in equilibrium 
 since the resulting magnetic field is screened by the Meissner effect. Non
 equilibrium detection is hindered by the fact that the edge excitations ar
 e unpaired Majorana fermions\, which cannot transport charge near the Ferm
 i level. In this talk\, we consider the transport properties of a domain w
 all between regions with p_x+ip_y and p_x-ip_y pairing. In particular\, we
  show that such a domain wall configuration allows one to overcome the dif
 ficulties arising from the "neutrality" of Majorana modes\, and find signa
 tures of the edge states in charge transport. In addressing the effect of 
 disorder on the transport properties\, we put the domain wall problem in a
  more general context\, and briefly discuss some recent developments regar
 ding the random matrix theory of quantum transport in chaotic superconduct
 ing structures.
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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