TY - JOUR
T1 - Magnetic transition in the Hubbard model on the triangular lattice
AU - Yoshioka, Takuya
AU - Koga, Akihisa
AU - Kawakami, Norio
PY - 2010/6/1
Y1 - 2010/6/1
N2 - We investigate a magnetic transition in the half-filled Hubbard model on the triangular lattice. By making use of the path-integral renormalization group (PIRG) method with a spin-rotated frame, we calculate the ground state energy and charge/spin correlation functions for a cluster with 36 sites. We find that as the Hubbard interaction is varied, a first-order magnetic phase transition occurs from a nonmagnetic insulating phase to a magnetically ordered phase with a 1203 spin configuration.
AB - We investigate a magnetic transition in the half-filled Hubbard model on the triangular lattice. By making use of the path-integral renormalization group (PIRG) method with a spin-rotated frame, we calculate the ground state energy and charge/spin correlation functions for a cluster with 36 sites. We find that as the Hubbard interaction is varied, a first-order magnetic phase transition occurs from a nonmagnetic insulating phase to a magnetically ordered phase with a 1203 spin configuration.
KW - Geometrical frustration
KW - Hubbard model
KW - Triangular lattice
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U2 - 10.1016/j.physb.2009.11.104
DO - 10.1016/j.physb.2009.11.104
M3 - Article
AN - SCOPUS:84859895274
VL - 405
SP - S179-S181
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 11 SUPPL.
ER -