Scattering theory of chiral Majorana fermion interferometry

Details Scattering theory of chiral Majorana fermion interferometry Scattering theory of chiral Majorana fermion interferometry

2012-02-05

arxiv.org/abs/1202.1018v1

Physical Review B 85, 125440 (2012)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.85.125440

Using scattering theory, we investigate interferometers composed of chiral Majorana fermion modes coupled to normal metal leads. We advance an approach in which also the basis states in the normal leads are written in terms of Majorana modes. Thus each pair of electron-hole states is associated with a pair of Majorana modes. Only one lead Majorana mode couples to the intrinsic Majorana mode whereas its partner is completely reflected. Similarly the remaining Majorana modes are completely reflected but in general mix pair-wise. We demonstrate that the charge current can also be expressed in terms of interference between pairs of Majorana modes. These two basic facts permit a treatment and understanding of current and noise signatures of chiral Majorana fermion interferometry in an especially elegant way. As a particular example of applications, in Fabry-Perot-type interferometers where chiral Majorana modes form loops, resonances (anti-resonances) from such loops always lead to peaked (suppressed) Andreev differential conductances, and negative (positive) cross-correlations that originate purely from two-Majorana-fermion exchange. These investigations are intimately related to current and noise signatures of Majorana bound states.

Affiliated with

Also associated with

No associations

Rating

Scattering theory of chiral Majorana fermion interferometry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Scattering theory of chiral Majorana fermion interferometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scattering theory of chiral Majorana fermion interferometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-117588