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A condensed matter realization of the axial magnetic effect

Abstract : The axial magnetic effect, i.e., the generation of an energy current parallel to an axial magnetic field coupling with opposite signs to left- and right-handed fermions is a non-dissipative transport phenomenon intimately related to the gravitational contribution to the axial anomaly. An axial magnetic field is naturally realized in condensed matter in the so called Weyl semi-metals. We show that the edge states of a Weyl semimetal at finite temperature possess a temperature dependent angular momentum in the direction of the vector potential intrinsic to the system. Such a condensed matter realization provides a plausible context for the experimental confirmation of the elusive gravitational anomaly.
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https://hal.archives-ouvertes.fr/hal-00903795
Contributor : Maxim Chernodub <>
Submitted on : Wednesday, November 13, 2013 - 10:20:24 AM
Last modification on : Friday, April 24, 2020 - 10:28:04 AM

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Maxim N. Chernodub, Alberto Cortijo, Adolfo G. Grushin, Karl Landsteiner, Maria A. H. Vozmediano. A condensed matter realization of the axial magnetic effect. Physical Review B: Condensed Matter and Materials Physics, American Physical Society, 2014, 89, pp.081407(R). ⟨10.1103/PhysRevB.89.081407⟩. ⟨hal-00903795⟩

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