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arXiv · 1911.00312

Universal chiral magnetic effect in the vortex lattice of a Weyl superconductor

M. J. Pacholski·C. W. J. Beenakker·İ. Adagideli
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Abstract

It was shown recently that Weyl fermions in a superconducting vortex lattice can condense into Landau levels. Here we study the chiral magnetic effect in the lowest Landau level: The appearance of an equilibrium current $I$ along the lines of magnetic flux $Φ$, due to an imbalance between Weyl fermions of opposite chirality. A universal contribution $dI/dΦ=(e/h)^2μ$ (at equilibrium chemical potential $μ$ relative to the Weyl point) appears when quasiparticles of one of the two chiralities are confined in vortex cores. The confined states are charge-neutral Majorana fermions.

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M. J. Pacholski, C. W. J. Beenakker, İ. Adagideli. 2020-02-21. Universal chiral magnetic effect in the vortex lattice of a Weyl superconductor. https://doi.org/10.1016/j.aop.2020.168103

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