DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2013 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

TT: Fachverband Tiefe Temperaturen

TT 67: Topological Insulators 5 (jointly with DS, HL, MA, and O)

TT 67.4: Talk

Friday, March 15, 2013, 10:15–10:30, H18

Zero-voltage conductance peak from weak antilocalization in a Majorana nanowire — •Michael Wimmer1, Dimitri Pikulin1, Jan Dahlhaus1, Henning Schomerus2, and Carlo Beenakker11Instituut-Lorentz, Universiteit Leiden, The Netherlands — 2Department of Physics, Lancaster University, United Kingdom

We show that weak antilocalization by disorder competes with resonant Andreev reflection from a Majorana zero-mode to produce a zero-voltage conductance peak of order e2/h in a superconducting nanowire. The phase conjugation needed for quantum interference to survive a disorder average is provided by particle-hole symmetry - in the absence of time-reversal symmetry and without requiring a topologically nontrivial phase. We identify methods to distinguish the Majorana resonance from the weak antilocalization effect.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2013 > Regensburg