2024/01/20 by M. Ibarra-Meneses, Ibarra-Meneses, M., A. Martín-Ruiz +1 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Magnetic properties of thin films #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Scientific Research and Discoveries #Topological Materials and Phenomena
paper · pdf · doi:10.48550/arxiv.2401.11285
openalex publication_date 2024/01/20 · openalex created_date 2024/01/24 · openalex updated_date 2026/07/28
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.