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| Autor principal: | |
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| Formato: | Preprint |
| Publicado: |
2023
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2308.11141 |
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| _version_ | 1866910501506646016 |
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| author | Morinari, Takao |
| author_facet | Morinari, Takao |
| contents | We investigate symmetry breaking in the Dirac fermion phase of the organic compound $α$-(BEDT-TTF)$_2$I$_3$ under pressure, where BEDT-TTF denotes bis(ethylenedithio)tetrathiafulvalene. The exchange interaction resulting from inter-molecule Coulomb repulsion leads to broken time-reversal symmetry and particle-hole symmetry while preserving translational symmetry. The system breaks time-reversal symmetry by creating fluxes in the unit cell. This symmetry-broken state exhibits a large Nernst signal as well as thermopower. We compute the Nernst signal and thermopower, demonstrating their consistency with experimental results. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_11141 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Time-Reversal Symmetry-Breaking Flux State in an Organic Dirac Fermion System Morinari, Takao Strongly Correlated Electrons We investigate symmetry breaking in the Dirac fermion phase of the organic compound $α$-(BEDT-TTF)$_2$I$_3$ under pressure, where BEDT-TTF denotes bis(ethylenedithio)tetrathiafulvalene. The exchange interaction resulting from inter-molecule Coulomb repulsion leads to broken time-reversal symmetry and particle-hole symmetry while preserving translational symmetry. The system breaks time-reversal symmetry by creating fluxes in the unit cell. This symmetry-broken state exhibits a large Nernst signal as well as thermopower. We compute the Nernst signal and thermopower, demonstrating their consistency with experimental results. |
| title | Time-Reversal Symmetry-Breaking Flux State in an Organic Dirac Fermion System |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2308.11141 |