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Generation of a Nernst Current from the Conformal Anomaly in Dirac and Weyl Semimetals

Abstract : We show that a conformal anomaly in Weyl and Dirac semimetals generates a bulk electric current perpendicular to a temperature gradient and the direction of a background magnetic field. The associated conductivity of this novel contribution to the Nernst effect is fixed by a beta function associated with the electric charge renormalization in the material. We discuss the experimental feasibility of the proposed phenomenon.
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https://hal.archives-ouvertes.fr/hal-01665291
Contributor : Maxim Chernodub <>
Submitted on : Thursday, November 19, 2020 - 12:41:37 PM
Last modification on : Tuesday, February 23, 2021 - 3:04:02 PM

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M. N. Chernodub, A. Cortijo, M. A. H. Vozmediano. Generation of a Nernst Current from the Conformal Anomaly in Dirac and Weyl Semimetals. Physical Review Letters, American Physical Society, 2018, 120 (20), pp.206601. ⟨10.1103/PhysRevLett.120.206601⟩. ⟨hal-01665291⟩

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