Phase separation in the two-dimensional Hubbard model

Journal Article · Sun Sep 01 04:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.R8281· OSTI ID:383827

Su, G ^[1]

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1. Institut fuer Theoretische Physik, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Koeln (Germany)

By making use of known exact results and symmetry properties for the one-band Hubbard model, we show in a somewhat exact manner that there is no phase separation on a square lattice at arbitrary fillings at finite temperature for both attractive and repulsive on-site Coulomb interaction. This result is consistent with the quantum Monto Carlo calculation. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 383827
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 12 Vol. 54; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COULOMB FIELD
ELECTRON-ELECTRON COUPLING
HIGH-TC SUPERCONDUCTORS
HUBBARD MODEL
PHASE STUDIES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES