Volume 10, Issue 2
Double Exchange Model in Triangular Lattice Studied by Truncated Polynomial Expansion Method

Gui-Ping Zhang

Commun. Comput. Phys., 10 (2011), pp. 422-432.

Published online: 2011-10

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  • 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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@Article{CiCP-10-422, author = {}, title = {Double Exchange Model in Triangular Lattice Studied by Truncated Polynomial Expansion Method}, journal = {Communications in Computational Physics}, year = {2011}, volume = {10}, number = {2}, pages = {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.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.160410.240910a}, url = {http://global-sci.org/intro/article_detail/cicp/7448.html} }
TY - JOUR T1 - Double Exchange Model in Triangular Lattice Studied by Truncated Polynomial Expansion Method JO - Communications in Computational Physics VL - 2 SP - 422 EP - 432 PY - 2011 DA - 2011/10 SN - 10 DO - http://dor.org/10.4208/cicp.160410.240910a UR - https://global-sci.org/intro/article_detail/cicp/7448.html KW - AB -

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.

Gui-Ping Zhang. (2020). Double Exchange Model in Triangular Lattice Studied by Truncated Polynomial Expansion Method. Communications in Computational Physics. 10 (2). 422-432. doi:10.4208/cicp.160410.240910a
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