Journal
PHYSICAL REVIEW B
Volume 94, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.94.241405
Keywords
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Funding
- Spanish MECD [FIS2014-57432-P]
- European Union
- Comunidad de Madrid MAD2D-CM Program [S2013/MIT-3007]
- MINECO (Spain) [FIS2015-73454-JIN]
- European Union [604391]
- U.S. Department of Energy [DE-FG-88ER40388, DE-AC02-98CH10886]
- Severo Ochoa Programme [SEV-2012-0249, FPA2015-65480-P]
- Simons Center for Geometry and Physics, Stony Brook University
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We argue that strain applied to a time-reversal and inversion breaking Weyl semimetal in a magnetic field can induce an electric current via the chiral magnetic effect. A tight-binding model is used to show that strain generically changes the locations in the Brillouin zone but also the energies of the band touching points (tips of the Weyl cones). Since axial charge in a Weyl semimetal can relax via intervalley scattering processes, the induced current will decay with a time scale given by the lifetime of a chiral quasiparticle. We estimate the strength and lifetime of the current for typical material parameters and find that it should be experimentally observable.
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