Mott Transition in Quasi-One-Dimensional Systems
| Autor: | S. Moukouri, Eitan Eidelstein |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Physics
Condensed matter physics Hubbard model Strongly Correlated Electrons (cond-mat.str-el) Mott insulator FOS: Physical sciences Renormalization group Condensed Matter Physics Deconfinement Electronic Optical and Magnetic Materials Mott transition Condensed Matter - Strongly Correlated Electrons Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Metal–insulator transition Anisotropy |
| DOI: | 10.48550/arxiv.1105.0150 |
| Popis: | We report the application of the density-matrix renormalization group method to a spatially anisotropic two-dimensional Hubbard model at half-filling. We find a deconfinement transition induced by the transverse hopping parameter $t_y$ from an insulator to a metal. Therefore, if $t_y$ is fixed in the metallic phase, increasing the interaction $U$ leads to a metal-to-insulator transition at a finite critical $U$. This is in contrast to the weak-coupling Hartree-Fock theory which predicts a nesting induced antiferromagnetic insulator for any $U>0$. 4 pages, 3 figures |
| Databáze: | OpenAIRE |
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