TY - JOUR
T1 - Double Exchange Model in Triangular Lattice Studied by Truncated Polynomial Expansion Method
AU - Gui-Ping Zhang
JO - Communications in Computational Physics
VL - 2
SP - 422
EP - 432
PY - 2011
DA - 2011/10
SN - 10
DO - http://doi.org/10.4208/cicp.160410.240910a
UR - https://global-sci.org/intro/article_detail/cicp/7448.html
KW - 
AB - <p style="text-align: justify;">The low temperature properties of double exchange model in triangular
lattice are investigated via truncated polynomial expansion method (TPEM), which
reduces the computational complexity and enables parallel computation. We found
that for the half-filling case a stable 120<sup>◦</sup>spin configuration phase occurs owing to the
frustration of triangular lattice and is further stabilized by antiferromagnetic (AF) superexchange
interaction, while a transition between a stable ferromagnetic (FM) phase
and a unique flux phase with small finite-size effect is induced by AF superexchange
interaction for the quarter-filling case.</p>