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arXiv · 2401.11285

Radiation of a short linear antenna above a topologically insulating half-space

M. Ibarra-Meneses·A. Martín-Ruiz
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Abstract

The topological magnetoelectric effect (TME) is a unique macroscopic manifestation of quantum states of matter possessing topological order and it is described by axion electrodynamics. In three-dimensional topological insulators, for instance, the axion coupling is of the order of the fine structure constant, and hence a perturbative analysis of the field equations is plenty justified. In this paper we use Green's function techniques to obtain time-dependent solutions to the axion field equations in the presence of a planar domain-wall separating two media with different topological order. We apply our results to investigate the radiation of a short linear antenna near the domain-wall.

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M. Ibarra-Meneses, A. Martín-Ruiz. 2024-01-20. Radiation of a short linear antenna above a topologically insulating half-space. https://arxiv.org/abs/2401.11285

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