Continuum damping of topologically-protected edge modes at the boundary of a magnetized plasma
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| Format: | Preprint |
| Published: |
2022
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| _version_ | 1866929698436546560 |
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| author | Rajawat, Roopendra Singh Khudik, V. Shvets, G. |
| author_facet | Rajawat, Roopendra Singh Khudik, V. Shvets, G. |
| contents | Recent extension of the topological ideas to continuous systems with broken time-reversal symmetry, such as magnetized plasmas, provides new insights into the nature of scattering-free topologically-protected surface plasma waves (TSPWs). We demonstrate a unique characteristic of TSPWs propagating above the electron cyclotron frequency: their collisionless damping via coupling to the continuum of resonant modes localized inside a smooth plasma-vacuum interface. Damped TSPWs retain their unidirectional nature and robustness against backscattering. When sheared magnetic field creates a boundary between damped and undamped TSPWs, the two refract into each other without reflections |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2203_06693 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Continuum damping of topologically-protected edge modes at the boundary of a magnetized plasma Rajawat, Roopendra Singh Khudik, V. Shvets, G. Plasma Physics Recent extension of the topological ideas to continuous systems with broken time-reversal symmetry, such as magnetized plasmas, provides new insights into the nature of scattering-free topologically-protected surface plasma waves (TSPWs). We demonstrate a unique characteristic of TSPWs propagating above the electron cyclotron frequency: their collisionless damping via coupling to the continuum of resonant modes localized inside a smooth plasma-vacuum interface. Damped TSPWs retain their unidirectional nature and robustness against backscattering. When sheared magnetic field creates a boundary between damped and undamped TSPWs, the two refract into each other without reflections |
| title | Continuum damping of topologically-protected edge modes at the boundary of a magnetized plasma |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2203.06693 |