Spin dynamics of a quasi-one-dimensional electron in the quantum limit
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2024
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| author | Fauzi, M. H. Takahashi, M. Aono, T. Hashimoto, K. Hirayama, Y. |
| author_facet | Fauzi, M. H. Takahashi, M. Aono, T. Hashimoto, K. Hirayama, Y. |
| contents | We study electron spin dynamics whose movement is restricted to the lowest one dimensional subband channel ($G \le 2e^2/h $), through nuclear spin relaxation rate measurement ($1/T_1$). We observe an unusual double-peak structure in the $1/T_1$ profile below the lowest subband level, where the up and down spin edge channel is still largely overlap. This profile significantly deviates from the behavior predicted by a non-interacting electron model, in which the only source of relaxation is through thermal fluctuations near the Fermi level. Our experimental results, supported by theoretical calculations, suggest that enhanced electron-electron interactions at the center of a quantum point contact are the likely origin of the observed double-peak structures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_16060 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spin dynamics of a quasi-one-dimensional electron in the quantum limit Fauzi, M. H. Takahashi, M. Aono, T. Hashimoto, K. Hirayama, Y. Mesoscale and Nanoscale Physics We study electron spin dynamics whose movement is restricted to the lowest one dimensional subband channel ($G \le 2e^2/h $), through nuclear spin relaxation rate measurement ($1/T_1$). We observe an unusual double-peak structure in the $1/T_1$ profile below the lowest subband level, where the up and down spin edge channel is still largely overlap. This profile significantly deviates from the behavior predicted by a non-interacting electron model, in which the only source of relaxation is through thermal fluctuations near the Fermi level. Our experimental results, supported by theoretical calculations, suggest that enhanced electron-electron interactions at the center of a quantum point contact are the likely origin of the observed double-peak structures. |
| title | Spin dynamics of a quasi-one-dimensional electron in the quantum limit |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2411.16060 |