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
Contributeur : Maxim Chernodub <>
Soumis le : vendredi 15 décembre 2017 - 16:38:43
Dernière modification le : jeudi 7 février 2019 - 15:22:34

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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 (206601), 〈dx.doi.org/10.1103/PhysRevLett.120.206601〉. 〈10.1103/PhysRevLett.120.206601〉. 〈hal-01665291〉

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