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

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

doi:10.1016/J.AOP.2020.168103

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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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.

Original language	English
Article number	168103
Journal	Annals of Physics
Volume	417
DOIs	https://doi.org/10.1016/J.AOP.2020.168103
Publication status	Published - Jun 2020
Externally published	Yes

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1-s2.0-S0003491620300361-mainFinal published version, 0.99 MBLicence: CC BY

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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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AU - Adagideli, I

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N2 - 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.

AB - 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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DO - 10.1016/J.AOP.2020.168103

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VL - 417

JO - Annals of Physics

JF - Annals of Physics

SN - 0003-4916

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ER -

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

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