Nonreciprocal current induced by dissipation in time-reversal symmetric systems
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866915917764493312 |
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| author | Anan, Takahiro Kitamura, Sota Morimoto, Takahiro |
| author_facet | Anan, Takahiro Kitamura, Sota Morimoto, Takahiro |
| contents | We study nonreciprocal current response in noncentrosymmetric crystals under time-reversal symmetry. We show that the nonreciprocal current appears in a dissipative system through interband processes. The nonreciprocal current is inversely proportional to the lifetime $τ$ and has a close relationship to the geometric quantity called the shift vector. The current mechanism is suitable for minigap systems where the energy gap and relaxation strength are comparable. We present a numerical simulation of the nonreciprocal current in the one-dimensional Rice--Mele model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_04520 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Nonreciprocal current induced by dissipation in time-reversal symmetric systems Anan, Takahiro Kitamura, Sota Morimoto, Takahiro Mesoscale and Nanoscale Physics We study nonreciprocal current response in noncentrosymmetric crystals under time-reversal symmetry. We show that the nonreciprocal current appears in a dissipative system through interband processes. The nonreciprocal current is inversely proportional to the lifetime $τ$ and has a close relationship to the geometric quantity called the shift vector. The current mechanism is suitable for minigap systems where the energy gap and relaxation strength are comparable. We present a numerical simulation of the nonreciprocal current in the one-dimensional Rice--Mele model. |
| title | Nonreciprocal current induced by dissipation in time-reversal symmetric systems |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2604.04520 |