Topological magnetotorsional effect in Weyl semimetals

Long Liang*, Teemu Ojanen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

In this Rapid Communication we introduce a thermal magnetotorsional effect (TME) as a topological response in magnetic Weyl semimetals. We predict that magnetization gradients perpendicular to the Weyl node separation give rise to temperature gradients depending only on the local positions of the Weyl nodes. The TME is a consequence of magnetization-induced effective torsional spacetime geometry and the finite-temperature Nieh-Yan anomaly. Similarly to the anomalous Hall effect and chiral anomaly, the TME has a universal material-independent form. We predict that the TME can be observed in the magnetic Weyl semimetal EuCd2As2.

Original languageEnglish
Article number022016
Number of pages6
JournalPHYSICAL REVIEW RESEARCH
Volume2
Issue number2
DOIs
Publication statusPublished - 23 Apr 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • STATES

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