Double Exchange Model in Triangular Lattice Studied by Truncated Polynomial Expansion Method

Double Exchange Model in Triangular Lattice Studied by Truncated Polynomial Expansion Method

Year:    2011

Communications in Computational Physics, Vol. 10 (2011), Iss. 2 : pp. 422–432

Abstract

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 120spin 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.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/cicp.160410.240910a

Communications in Computational Physics, Vol. 10 (2011), Iss. 2 : pp. 422–432

Published online:    2011-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    11

Keywords:   

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