Current-phase relation and h / e -periodic critical current of a chiral Josephson contact between one-dimensional Majorana modes

We explore a long Josephson contact transporting Cooper pairs between one-dimensional (1D) charge-neutral chiral Majorana modes in the leads via charged Dirac chiral modes in the normal region. We investigate the regimes of (i) transparent contacts and (ii) tunnel junctions implemented in 3D topolog...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. B 2016-04, Vol.93 (15), Article 155411
Main Authors: Shapiro, Dmitriy S., Shnirman, Alexander, Mirlin, Alexander D.
Format: Article
Language:English
Subjects:
Condensed matter
Contact
Insulators
Magnetic flux
Phases
Three dimensional
Transporting
Tunnel junctions
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We explore a long Josephson contact transporting Cooper pairs between one-dimensional (1D) charge-neutral chiral Majorana modes in the leads via charged Dirac chiral modes in the normal region. We investigate the regimes of (i) transparent contacts and (ii) tunnel junctions implemented in 3D topological insulator/superconductor/magnet hybrid structures. The setup acts as a SQUID controlled by the magnetic flux enclosed by the chiral loop of the normal region. This chirality leads to the fractional h/e-periodic pattern of critical current. The current-phase relation can have sawtoothlike shape with spikes at unusual even phases of 2[pi]n.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.93.155411