Magnetic phases of the anisotropic triangular lattice Hubbard model
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2022
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| _version_ | 1866912473768001536 |
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| author | Yu, Yang Li, Shaozhi Iskakov, Sergei Gull, Emanuel |
| author_facet | Yu, Yang Li, Shaozhi Iskakov, Sergei Gull, Emanuel |
| contents | The Hubbard model on an anisotropic triangular lattice in two dimensions, a fundamental model for frustrated electron physics, displays a wide variety of phases and phase transitions. This work investigates the model using the ladder dual fermion approximation which captures local correlations non-perturbatively but approximates non-local correlations. We find metallic, one-dimensional antiferromagnetic, non-collinear antiferromagnetic, square-lattice antiferromagnetic, and spiral phases but no evidence of collinear antiferromagnetic order in different parts of the phase diagram. Analyzing the spin susceptibility in detail, we see both regions of agreement and of discrepancy with previous work. The case of Cs$_2$CuCl$_4$ is discussed in detail. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_09234 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Magnetic phases of the anisotropic triangular lattice Hubbard model Yu, Yang Li, Shaozhi Iskakov, Sergei Gull, Emanuel Strongly Correlated Electrons The Hubbard model on an anisotropic triangular lattice in two dimensions, a fundamental model for frustrated electron physics, displays a wide variety of phases and phase transitions. This work investigates the model using the ladder dual fermion approximation which captures local correlations non-perturbatively but approximates non-local correlations. We find metallic, one-dimensional antiferromagnetic, non-collinear antiferromagnetic, square-lattice antiferromagnetic, and spiral phases but no evidence of collinear antiferromagnetic order in different parts of the phase diagram. Analyzing the spin susceptibility in detail, we see both regions of agreement and of discrepancy with previous work. The case of Cs$_2$CuCl$_4$ is discussed in detail. |
| title | Magnetic phases of the anisotropic triangular lattice Hubbard model |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2211.09234 |