{"title":"三维掺杂哈伯德模型的磁相图","authors":"Liam Rampon, Fedor Šimkovic IV, Michel Ferrero","doi":"arxiv-2409.08848","DOIUrl":null,"url":null,"abstract":"We establish the phase diagram of the Hubbard model on a cubic lattice for a\nwide range of temperatures, dopings and interaction strengths, considering both\ncommensurate and incommensurate magnetic orders. We use the dynamical\nmean-field theory together with an efficient method to compute the free energy\nwhich enable the determination of the correct ordering vectors. Besides an\nantiferromagnetic state close to half-filling, we identify a number of\ndifferent magnetic spiral phases with ordering vectors $(q,\\pi,\\pi)$,\n$(q,q,\\pi)$ and $(q,q,q)$ as well as a region with close competition between\nthem, hinting at spatial phase separation or at the onset of a stripe phase.\nAdditionally, we extensively study several thermodynamic properties with direct\nrelevance to cold-atom experiments: the entropy, energy and double-occupancy.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Magnetic phase diagram of the three-dimensional doped Hubbard model\",\"authors\":\"Liam Rampon, Fedor Šimkovic IV, Michel Ferrero\",\"doi\":\"arxiv-2409.08848\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We establish the phase diagram of the Hubbard model on a cubic lattice for a\\nwide range of temperatures, dopings and interaction strengths, considering both\\ncommensurate and incommensurate magnetic orders. We use the dynamical\\nmean-field theory together with an efficient method to compute the free energy\\nwhich enable the determination of the correct ordering vectors. Besides an\\nantiferromagnetic state close to half-filling, we identify a number of\\ndifferent magnetic spiral phases with ordering vectors $(q,\\\\pi,\\\\pi)$,\\n$(q,q,\\\\pi)$ and $(q,q,q)$ as well as a region with close competition between\\nthem, hinting at spatial phase separation or at the onset of a stripe phase.\\nAdditionally, we extensively study several thermodynamic properties with direct\\nrelevance to cold-atom experiments: the entropy, energy and double-occupancy.\",\"PeriodicalId\":501171,\"journal\":{\"name\":\"arXiv - PHYS - Strongly Correlated Electrons\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Strongly Correlated Electrons\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.08848\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Strongly Correlated Electrons","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.08848","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Magnetic phase diagram of the three-dimensional doped Hubbard model
We establish the phase diagram of the Hubbard model on a cubic lattice for a
wide range of temperatures, dopings and interaction strengths, considering both
commensurate and incommensurate magnetic orders. We use the dynamical
mean-field theory together with an efficient method to compute the free energy
which enable the determination of the correct ordering vectors. Besides an
antiferromagnetic state close to half-filling, we identify a number of
different magnetic spiral phases with ordering vectors $(q,\pi,\pi)$,
$(q,q,\pi)$ and $(q,q,q)$ as well as a region with close competition between
them, hinting at spatial phase separation or at the onset of a stripe phase.
Additionally, we extensively study several thermodynamic properties with direct
relevance to cold-atom experiments: the entropy, energy and double-occupancy.