Chiral-Anomaly-Driven Casimir-Lifshitz Torque between Weyl Semimetals

Liang Chen and Kai Chang
Phys. Rev. Lett. 125, 047402 – Published 24 July 2020
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Abstract

We propose a new mechanism to generate the Casimir-Lifshitz torque between Weyl semimetals arising from the chiral anomaly. For short distances ranging from a nanometer to a few tens of nanometers, chiral anomaly is manifested via a Casimir-Lifshitz torque sin(θ) with θ being the twisting angle. As the distance between Weyl semimetals increases from a submicrometer to a few micrometers, chiral-anomaly-driven Casimir-Lifshitz torque between Weyl semimetals is remarkably large, which is comparable with that of conventional birefringent materials.

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  • Received 22 January 2020
  • Accepted 8 July 2020

DOI:https://doi.org/10.1103/PhysRevLett.125.047402

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Particles & FieldsCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Liang Chen1 and Kai Chang2,3,4,*

  • 1Mathematics and Physics Department, North China Electric Power University, Beijing 102206, China
  • 2SKLSM, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China
  • 3CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, China
  • 4Beijing Academy of Quantum Information Sciences, Beijing 100193, China

  • *Corresponding author. kchang@semi.ac.cn

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Issue

Vol. 125, Iss. 4 — 24 July 2020

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