Spin, charge, and orbital correlations in the one-dimensional t2g -orbital Hubbard model

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Autor(es): dc.contributorOak Ridge National Laboratory-
Autor(es): dc.contributorUniversity of Tennessee-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorJapan Atomic Energy Research Institute-
Autor(es): dc.creatorXavier, J. C. [UNESP]-
Autor(es): dc.creatorOnishi, H.-
Autor(es): dc.creatorHotta, T.-
Autor(es): dc.creatorDagotto, E.-
Data de aceite: dc.date.accessioned2022-08-04T22:01:34Z-
Data de disponibilização: dc.date.available2022-08-04T22:01:34Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2006-02-27-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.73.014405-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/219385-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/219385-
Descrição: dc.descriptionWe present the zero-temperature phase diagram of the one-dimensional t2g -orbital Hubbard model, obtained using the density-matrix renormalization group and Lanczos techniques. Emphasis is given to the case of the electron density n=5 corresponding to five electrons per site, while several other cases for electron densities between n=3 and 6 are also studied. At n=5, our results indicate a first-order transition between a paramagnetic (PM) insulator phase, with power-law slowly decaying correlations, and a fully polarized ferromagnetic (FM) state by tuning the Hund's coupling. The results also suggest a transition from the n=5 PM insulator phase to a metallic regime by changing the electron density, either via hole or electron doping. The behavior of the spin, charge, and orbital correlation functions in the FM and PM states are also described in the text and discussed. The robustness of these two states against varying parameters suggests that they may be of relevance in quasi-one-dimensional Co-oxide materials, or even in higher dimensional cobaltite systems as well. © 2006 The American Physical Society.-
Descrição: dc.descriptionCondensed Matter Sciences Division Oak Ridge National Laboratory, Oak Ridge, TN 37831-
Descrição: dc.descriptionDepartment of Physics University of Tennessee, Knoxville, TN 37996-
Descrição: dc.descriptionUniversidade Estadual Paulista, CP 713, 17015-970 Bauru, SP-
Descrição: dc.descriptionAdvanced Science Research Center Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195-
Descrição: dc.descriptionUniversidade Estadual Paulista, CP 713, 17015-970 Bauru, SP-
Idioma: dc.languageen-
Relação: dc.relationPhysical Review B - Condensed Matter and Materials Physics-
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Título: dc.titleSpin, charge, and orbital correlations in the one-dimensional t2g -orbital Hubbard model-
Tipo de arquivo: dc.typelivro digital-
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