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

M. J. Pacholski, C.W.J. Beenakker, I Adagideli

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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.
Original languageEnglish
Article number168103
JournalAnnals of Physics
Publication statusPublished - Jun 2020
Externally publishedYes


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