Chiral magnetic effect of hot electrons

Abstract

We propose a way to observe the chiral magnetic effect in non-centrosymmetric Weyl semimetals under the action of strong electric field, via the non-linear part of their I-V characteristic that is odd in the external magnetic field, or odd-in-magnetic field voltages in electrically open circuits. This effect relies on valley-selective heating in such materials, which in general leads to nonequilibrium valley population imbalances. In the presence of an external magnetic field, such a valley-imbalanced Weyl semimetal will in general develop an electric current along the direction of the magnetic field -- the chiral magnetic effect. We also discuss a specific experimental setup to observe the chiral magnetic effect of hot electrons.

arXiv comment4 pages, 2 figures

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• Chiral light amplifier with pumped Weyl semimetals
• Anomaly-induced sound absorption in Weyl semimetals
• Dynamical chiral magnetic current and instability in Weyl semimetals
• Quantum Hall Effect in a Weyl-Hubbard Model: Interplay between Topology and Correlation
• Signature of nodal topology in nonlinear quantum transport across junctions in Weyl and multi-Weyl semimetals
• Quantum magnetic oscillations in Weyl semimetals with tilted nodes
• Current response to axial gauge fields in noncentrosymmetric magnetic Weyl semimetals