Superconductivity and Mottness in Organic Charge Transfer Materials
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916415108284416 |
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| author | Menke, Henri Klett, Marcel Kanoda, Kazushi Georges, Antoine Ferrero, Michel Schäfer, Thomas |
| author_facet | Menke, Henri Klett, Marcel Kanoda, Kazushi Georges, Antoine Ferrero, Michel Schäfer, Thomas |
| contents | The phase diagrams of quasi two-dimensional organic superconductors display a plethora of fundamental phenomena associated with strong electron correlations, such as unconventional superconductivity, metal-insulator transitions, frustrated magnetism and spin liquid behavior. We analyze a minimal model for these compounds, the Hubbard model on an anisotropic triangular lattice, using cutting-edge quantum embedding methods respecting the lattice symmetry. We demonstrate the existence of unconventional superconductivity by directly entering the symmetry-broken phase. We show that the crossover from the Fermi liquid metal to the Mott insulator is associated with the formation of a pseudogap. The predicted momentum-selective destruction of the Fermi surface into hot and cold regions provides motivation for further spectroscopic studies. Our results are in remarkable agreement with experimental phase diagrams of $κ$-BEDT organics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_10650 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Superconductivity and Mottness in Organic Charge Transfer Materials Menke, Henri Klett, Marcel Kanoda, Kazushi Georges, Antoine Ferrero, Michel Schäfer, Thomas Strongly Correlated Electrons Superconductivity The phase diagrams of quasi two-dimensional organic superconductors display a plethora of fundamental phenomena associated with strong electron correlations, such as unconventional superconductivity, metal-insulator transitions, frustrated magnetism and spin liquid behavior. We analyze a minimal model for these compounds, the Hubbard model on an anisotropic triangular lattice, using cutting-edge quantum embedding methods respecting the lattice symmetry. We demonstrate the existence of unconventional superconductivity by directly entering the symmetry-broken phase. We show that the crossover from the Fermi liquid metal to the Mott insulator is associated with the formation of a pseudogap. The predicted momentum-selective destruction of the Fermi surface into hot and cold regions provides motivation for further spectroscopic studies. Our results are in remarkable agreement with experimental phase diagrams of $κ$-BEDT organics. |
| title | Superconductivity and Mottness in Organic Charge Transfer Materials |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2401.10650 |