TY - JOUR
T1 - Functional renormalization group approach for extended Hubbard model in a triangular lattice
AU - Takashima, Hirokazu
AU - Ishihara, Sumio
PY - 2011
Y1 - 2011
N2 - 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).
AB - 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).
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U2 - 10.1088/1742-6596/320/1/012063
DO - 10.1088/1742-6596/320/1/012063
M3 - Conference article
AN - SCOPUS:81055133414
VL - 320
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
M1 - 012063
T2 - International Conference on Frustration in Condensed Matter, ICFCM
Y2 - 11 January 2011 through 14 January 2011
ER -