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...

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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
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description 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.
doi_str_mv 10.1103/PhysRevB.93.155411
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Condensed matter
Contact
Insulators
Magnetic flux
Phases
Three dimensional
Transporting
Tunnel junctions
title Current-phase relation and h / e -periodic critical current of a chiral Josephson contact between one-dimensional Majorana modes
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