CM-AMO SEMINAR
Transport Signatures of Floquet Majorana Fermions in Driven Topological Superconductors


Dec
03
2013

Add to Cal
  • Speaker: Babak Seradjeh (Indiana University - Bloomington, Physics)
  • Host Department: Physics
  • Date: 12/03/2013
  • Time: 4:00 PM - 5:00 PM

  • Location: 335 West Hall

  • Description:

    Topologically nontrivial steady bound states may arise when a topologically trivial system is driven periodically. In the superconducting state, these are equal mixtures of electrons and holes known as Floquet Majorana fermions. I will discuss our recent work on the non-equilibrium transport through Floquet Majorana fermions and show, both analytically and numerically, that their presence is signaled by a quantized conductance sum rule over discrete values of bias differing by multiple absorption or emission energies at drive frequency. We also study the effects of disorder on this quantization and suggest that it could help identify the topological signatures of Floquet Majorana fermions. Time permitting, related results at finite temperature and low drive frequencies will be discussed.


College of Literature, Science, and the Arts 500 S. State Street, Ann Arbor, MI  48109 © 2014 Regents of the University of Michigan