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Published on: November 1, 2018
Generation of a Nernst Current from the Conformal Anomaly in Dirac and Weyl Semimetals
M N Chernodub1,2, Alberto Cortijo3, María A H Vozmediano3
1Institut Denis Poisson UMR 7013, Université de Tours, Tours 37200, France.
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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