Vavilov-Cherenkov radiation for parallel motion in three-dimensional topological insulators
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| Format: | Preprint |
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2024
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| _version_ | 1866913591766024192 |
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| author | Franca, O. J. Buhmann, Stefan Yoshi |
| author_facet | Franca, O. J. Buhmann, Stefan Yoshi |
| contents | Our study delves into the modifications observed in Vavilov-Cherenkov radiation when its generating charged particle moves parallel to an interface formed by two generic magnetoelectric media, focusing on topological insulators. We compute the electromagnetic field through the Green's function. Applying the far-field approximation and the steepest descent method, we derive analytical expressions for the electric field, revealing contributions from spherical and lateral waves with topological origins. Subsequently, we analyze the angular distribution of the radiation, particularly focusing on parallel motions in close proximity to the interface. Our findings indicate that the radiation along the Vavilov-Cherenkov cone is inhomogeneous and asymmetric. We analyze the radiated energy at both sides of the interface. Finally, we discuss the particle's retarding force, which is notably enhanced in the ultrarelativistic regime. We illustrate these results for the topological insulator TlBiSe$_2$ and the magnetoelectric TbPO$_4$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2405_15906 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Vavilov-Cherenkov radiation for parallel motion in three-dimensional topological insulators Franca, O. J. Buhmann, Stefan Yoshi Mesoscale and Nanoscale Physics High Energy Physics - Phenomenology High Energy Physics - Theory Our study delves into the modifications observed in Vavilov-Cherenkov radiation when its generating charged particle moves parallel to an interface formed by two generic magnetoelectric media, focusing on topological insulators. We compute the electromagnetic field through the Green's function. Applying the far-field approximation and the steepest descent method, we derive analytical expressions for the electric field, revealing contributions from spherical and lateral waves with topological origins. Subsequently, we analyze the angular distribution of the radiation, particularly focusing on parallel motions in close proximity to the interface. Our findings indicate that the radiation along the Vavilov-Cherenkov cone is inhomogeneous and asymmetric. We analyze the radiated energy at both sides of the interface. Finally, we discuss the particle's retarding force, which is notably enhanced in the ultrarelativistic regime. We illustrate these results for the topological insulator TlBiSe$_2$ and the magnetoelectric TbPO$_4$. |
| title | Vavilov-Cherenkov radiation for parallel motion in three-dimensional topological insulators |
| topic | Mesoscale and Nanoscale Physics High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2405.15906 |