Journal
PHYSICAL REVIEW B
Volume 95, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.95.115422
Keywords
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Funding
- Program of Fundamental Research of the Physics and Astronomy Division of the National Academy of Sciences of Ukraine
- Natural Sciences and Engineering Research Council of Canada
- US National Science Foundation [PHY-1404232]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1404232] Funding Source: National Science Foundation
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The existence of pseudomagnetic helicons is predicted for strained Dirac and Weyl materials. The corresponding collective modes are reminiscent of the usual helicons in metals in strong magnetic fields but can exist even without a magnetic field due to a strain-induced background pseudomagnetic field. The properties of both pseudomagnetic and magnetic helicons are investigated in Weyl matter using the formalism of the consistent chiral kinetic theory. It is argued that the helicon dispersion relations are affected by the electric and chiral chemical potentials, the chiral shift, and the energy separation between the Weyl nodes. The effects of multiple pairs of Weyl nodes are also discussed. A simple setup for experimental detection of pseudomagnetic helicons is proposed.
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