Supercurrent blockade in Josephson junctions with a Majorana wire

Details Supercurrent blockade in Josephson junctions with a Majorana wire Supercurrent blockade in Josephson junctions with a Majorana wire

2012-02-02

arxiv.org/abs/1202.0438v2

Phys. Rev. B 85, 104514 (2012)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 2 figures, to appear in PRB

Scientific paper

10.1103/PhysRevB.85.104514

We study the Josephson effect for a topologically nontrivial superconducting (TS) wire with Majorana fermion end states and tunnel-coupled to s-wave BCS superconducting (S) electrodes. In an S-TS junction, no supercurrent flow is possible under fairly general conditions. For the S-TS-S junction, bulk TS quasiparticles must be accessible to have a Josephson effect. In the noninteracting case, we derive the exact current-phase relation (CPR) and find \pi-periodic behavior with negative critical current for weak tunnel couplings. Charging effects then cause the anomalous CPR $I(\varphi)=I_c \cos\varphi$, where the parity-sensitive critical current I_c provides a signature for Majorana states.

Affiliated with

Also associated with

No associations

Rating

Supercurrent blockade in Josephson junctions with a Majorana wire 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 Supercurrent blockade in Josephson junctions with a Majorana wire, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supercurrent blockade in Josephson junctions with a Majorana wire will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-187662