Inherited Berry curvature of phonons in Dirac materials with time-reversal symmetry
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866909888527990784 |
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| author | Ghosh, Sayandip Parlak, Selçuk Garate, Ion |
| author_facet | Ghosh, Sayandip Parlak, Selçuk Garate, Ion |
| contents | The Berry curvature of phonons is an active subject of research in condensed matter physics. Here, we present a model in which phonons acquire a Berry curvature through their coupling to electrons in crystals with time-reversal symmetry. We illustrate this effect for BaMnSb$_2$, a quasi two-dimensional Dirac insulator, whose low-energy massive Dirac fermions generate a phonon Berry curvature that is proportional to the electronic valley Chern number. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_13814 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Inherited Berry curvature of phonons in Dirac materials with time-reversal symmetry Ghosh, Sayandip Parlak, Selçuk Garate, Ion Mesoscale and Nanoscale Physics Materials Science Other Condensed Matter The Berry curvature of phonons is an active subject of research in condensed matter physics. Here, we present a model in which phonons acquire a Berry curvature through their coupling to electrons in crystals with time-reversal symmetry. We illustrate this effect for BaMnSb$_2$, a quasi two-dimensional Dirac insulator, whose low-energy massive Dirac fermions generate a phonon Berry curvature that is proportional to the electronic valley Chern number. |
| title | Inherited Berry curvature of phonons in Dirac materials with time-reversal symmetry |
| topic | Mesoscale and Nanoscale Physics Materials Science Other Condensed Matter |
| url | https://arxiv.org/abs/2502.13814 |