2020/04/30 by Matteo Baggioli, matteo Baggioli, Maxim N. Chernodub +3
Materials Science · Physics and Astronomy · #2D Materials and Applications #Anomaly (physics) #Calorimeter (particle physics) #Chemical and Physical Properties of Materials #Chiral anomaly #Gapless playback #Gauge (firearms) #Realization (probability) #Thermal #Topological Materials and Phenomena #Twist #Weyl semimetal #cond-mat.mes-hall #hep-th
paper · pdf · doi:10.21468/scipostphyscore.3.2.013
published as SciPost Phys. Core 3, 013 (2020) · v2: minor revisions
openalex created_date 2020/04/10 · arxiv created 2020/11/06 · openalex publication_date 2020/12/02 · arxiv updated 2020/12/24 · openalex updated_date 2026/08/05
Torsional strain in Weyl semimetals excites a unidirectional chiral density wave propagating in the direction of the torsional vector. This gapless excitation, named the chiral sound wave, is generated by a particular realization of the axial anomaly via the triple-axial (AAA) anomalous diagram. We show that the presence of the torsion-generated chiral sound leads to a linear behavior of the specific heat of a Weyl semimetal and to an enhancement of the thermal conductivty at experimentally accessible temperatures. We also demonstrate that such an elastic twist lowers the temperature of the sample, thus generating a new, anomalous type of elasto-calorific effect. Measurements of these thermodynamical effects will provide experimental verification of the exotic triple-axial anomaly as well as the reality of the elastic pseudomagnetic fields in Weyl semimetals.