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| Format: | Preprint |
| Published: |
2024
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| Online Access: | https://arxiv.org/abs/2402.12489 |
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| _version_ | 1866909390212169728 |
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| author | Resta, Raffaele |
| author_facet | Resta, Raffaele |
| contents | The electric field of light induces--in a non centrosymmetric insulator--a dc current, quadratic in the field magnitude, and called "shift current". When addressed from a many-electron viewpoint, the shift current has a simple explanation and a simple formulation as well, deeply rooted in quantum geometry. The basic formula is then specialized to the independent-electron case, first for a disordered system in a supercell formulation, and then for a crystalline system. In the latter case the known shift-current formula is retrieved in a very transparent way. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_12489 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Geometrical theory of the shift current in presence of disorder and interaction Resta, Raffaele Materials Science The electric field of light induces--in a non centrosymmetric insulator--a dc current, quadratic in the field magnitude, and called "shift current". When addressed from a many-electron viewpoint, the shift current has a simple explanation and a simple formulation as well, deeply rooted in quantum geometry. The basic formula is then specialized to the independent-electron case, first for a disordered system in a supercell formulation, and then for a crystalline system. In the latter case the known shift-current formula is retrieved in a very transparent way. |
| title | Geometrical theory of the shift current in presence of disorder and interaction |
| topic | Materials Science |
| url | https://arxiv.org/abs/2402.12489 |