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arXiv · 2004.00165

Chiral magnetic effect of hot electrons

S. Nandy·D. A. Pesin
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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.

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S. Nandy, D. A. Pesin. 2020-03-31. Chiral magnetic effect of hot electrons. https://doi.org/10.1103/physrevlett.125.266601

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