Dynamics of surface electrons in a topological insulator: cyclotron resonance at room temperature
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915714594504704 |
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| author | Mohelsky, I. Mardele, F. Le Dzian, J. Wyzula, J. Sun, X. D. Cho, C. W. Piot, B. A. Shankar, M. Sankar, R. Ferguson, A. Santos-Cottin, D. Marsik, P. Bernhard, C. Akrap, A. Potemski, M. Orlita, M. |
| author_facet | Mohelsky, I. Mardele, F. Le Dzian, J. Wyzula, J. Sun, X. D. Cho, C. W. Piot, B. A. Shankar, M. Sankar, R. Ferguson, A. Santos-Cottin, D. Marsik, P. Bernhard, C. Akrap, A. Potemski, M. Orlita, M. |
| contents | The ability to manipulate the surface states of topological insulators using electric or magnetic fields under ambient conditions is a key step toward their integration into future electronic and optoelectronic devices. Here, we demonstrate - using cyclotron resonance measurements on a tin-doped BiSbTe$_2$S topological insulator - that moderate magnetic fields can quantize massless surface electrons into Landau levels even at room temperature. This finding suggests that surface-state electrons can behave as long-lived quasiparticles at unexpectedly high temperatures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_08420 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dynamics of surface electrons in a topological insulator: cyclotron resonance at room temperature Mohelsky, I. Mardele, F. Le Dzian, J. Wyzula, J. Sun, X. D. Cho, C. W. Piot, B. A. Shankar, M. Sankar, R. Ferguson, A. Santos-Cottin, D. Marsik, P. Bernhard, C. Akrap, A. Potemski, M. Orlita, M. Mesoscale and Nanoscale Physics The ability to manipulate the surface states of topological insulators using electric or magnetic fields under ambient conditions is a key step toward their integration into future electronic and optoelectronic devices. Here, we demonstrate - using cyclotron resonance measurements on a tin-doped BiSbTe$_2$S topological insulator - that moderate magnetic fields can quantize massless surface electrons into Landau levels even at room temperature. This finding suggests that surface-state electrons can behave as long-lived quasiparticles at unexpectedly high temperatures. |
| title | Dynamics of surface electrons in a topological insulator: cyclotron resonance at room temperature |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2504.08420 |