Chiral nodes and oscillations in the Josephson current in Weyl semimetals

Khanna, Udit ; Mukherjee, Dibya Kanti ; Kundu, Arijit ; Rao, Sumathi (2016) Chiral nodes and oscillations in the Josephson current in Weyl semimetals Physical Review B: Condensed Matter and Materials Physics, 93 (12). Article ID 121409(R). ISSN 2469-9950

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Official URL: https://journals.aps.org/prb/abstract/10.1103/Phys...

Related URL: http://dx.doi.org/10.1103/PhysRevB.93.121409

Abstract

The separation of the Weyl nodes in a broken time-reversal symmetric Weyl semimetal leads to helical quasiparticle excitations at the Weyl nodes which, when coupled with overall spin conservation, allows only internodal transport at the junction of the Weyl semimetal with a superconductor. This leads to an unusual periodic oscillation in the Josephson current as a function of k0L, where L is the length of the Weyl semimetal and 2k0 is the internodal distance. This oscillation is robust and should be experimentally measurable, providing a direct path to confirming the existence of chiral nodes in the Weyl semimetal.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:109504
Deposited On:01 Feb 2018 05:12
Last Modified:01 Feb 2018 05:12

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