期刊
PHYSICAL REVIEW B
卷 104, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.104.085129
关键词
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资金
- National Science Foundation [DMR-2001465, DMR130036, DMR-1944974, ACI-1548562]
- Simons Foundation via the Simons Collaboration on the Many-Electron Problem
In this study, the phase transitions and mechanisms of electron localization in the extended Hubbard model were examined using the dynamical cluster approximation on a 2 x 2 cluster. The interplay of charge order and Mott physics was explored, with findings showing the effects of nearest-neighbor Coulomb interaction V on correlations in metallic and insulating regimes, as well as the different correlation aspects of charge order and Mott states.
We perform a detailed study of the phase transitions and mechanisms of electron localization in the extended Hubbard model using the dynamical cluster approximation on a 2 x 2 cluster. We explore the interplay of charge order and Mott physics. We find that a nearest-neighbor Coulomb interaction V causes screening effects close to the Mott phase transition, pushing the phase boundary to larger values ofU. We also demonstrate the different effects of V on correlations in metallic and insulating regimes, and document the different correlation aspects of charge order and Mott states.
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