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arXiv · 2507.02816

Helicons in tilted-Weyl semimetals

Shiv Kumar Ram·Amit Gupta
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Abstract

We investigate the helicon modes in gapless tilted 3d Weyl semimetals(WSMs) within a semiclassical Boltzmann approach with the inclusion of the orbital magnetic moment. These are transverse electromagnetic modes in three-dimensional (3D) electron systems in the presence of a static magnetic field. We calculate the conductivity tensor and show that the helicon modes exist in tilted WSMs. The degeneracy of all the gapped collective modes at the long-wavelength limit is unaffected by the tilting of the Weyl nodes.

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Shiv Kumar Ram, Amit Gupta. 2025-07-03. Helicons in tilted-Weyl semimetals. https://arxiv.org/abs/2507.02816

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