Functional renormalization group approach for extended Hubbard model in a triangular lattice

Hirokazu Takashima, Sumio Ishihara

Research output: Contribution to journalConference articlepeer-review

Abstract

The extended Hubbard model in an anisotropic triangular lattice is analyzed at quarter filling by the functional renormalization group (fRG) approach. We obtain the finite temperature phase diagram in the plane of nearest inter-site Coulomb interaction Vp and next-nearest Coulomb interaction V c. When Vp ≈ Vc, charge order does not occur down to the low temperature of 0.1tp, where the tp is the electron transfer between the nearest neighbor sites. We interpret the result using the random-phase approximation(RPA).

Original languageEnglish
Article number012063
JournalJournal of Physics: Conference Series
Volume320
DOIs
Publication statusPublished - 2011 Jan 1
EventInternational Conference on Frustration in Condensed Matter, ICFCM - Sendai, Japan
Duration: 2011 Jan 112011 Jan 14

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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