Anomalous skew scattering of plasmons in a Dirac electron fluid
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866917991508082688 |
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| author | Finnigan, Cooper Efimkin, Dmitry K. |
| author_facet | Finnigan, Cooper Efimkin, Dmitry K. |
| contents | The Berry phase-related nontrivial electronic band geometries can significantly influence bulk and edge plasmons resulting in their non-reciprocal propagation and opening new opportunities for plasmonics. In the present work, we extend the hydrodynamic framework to describe the scattering of plasmons in a Dirac electron fluid off a circular region with an induced nonzero anomalous Hall response, i.e. a Berry flux target. We demonstrate that the scattering has a giant asymmetry or skewness and exhibits a series of resonances. The latter appears due to a chiral non-topological trapped mode circulating the target. We discuss possible experimental realizations, including the surface of a topological insulator film and graphene irradiated by the circularly polarized beam. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_01566 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anomalous skew scattering of plasmons in a Dirac electron fluid Finnigan, Cooper Efimkin, Dmitry K. Mesoscale and Nanoscale Physics The Berry phase-related nontrivial electronic band geometries can significantly influence bulk and edge plasmons resulting in their non-reciprocal propagation and opening new opportunities for plasmonics. In the present work, we extend the hydrodynamic framework to describe the scattering of plasmons in a Dirac electron fluid off a circular region with an induced nonzero anomalous Hall response, i.e. a Berry flux target. We demonstrate that the scattering has a giant asymmetry or skewness and exhibits a series of resonances. The latter appears due to a chiral non-topological trapped mode circulating the target. We discuss possible experimental realizations, including the surface of a topological insulator film and graphene irradiated by the circularly polarized beam. |
| title | Anomalous skew scattering of plasmons in a Dirac electron fluid |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2501.01566 |