Ground-state phase diagram of the Kondo lattice model on triangular-to-kagome lattices
Ground-state phase diagram of the Kondo lattice model on triangular-to-kagome lattices
复制标题
DOI：
10.3938/jkps.63.405
复制
发表时间：
2012-06
影响因子：
0.6
通讯作者：
Y. Akagi;Y. Motome
中科院分区：
文献类型：
--
作者：
Y. Akagi;Y. Motome
利用变分方法研究了三角形到kagome晶格上具有经典局域自旋的Kondo晶格模型的基态相图。我们确定了一个四个子晶格非共面顺序是稳定的有限自旋标量手征的参数区域，而不断改变晶格结构从三角形的戈薇。虽然非共面自旋态出现在一个很宽的参数范围内，自旋配置的kagome网络成为共面的接近kagome晶格，最终，标量手征消失的kagome晶格模型。
We investigate the ground-state phase diagram of the Kondo lattice model with classical localized spins on triangular-to-kagome lattices by using a variational calculation. We identify the parameter regions where a four-sublattice noncoplanar order is stable with a finite spin scalar chirality while changing the lattice structure from triangular to kagome continuously. Although the noncoplanar spin states appear over a wide range of parameters, the spin configurations on the kagome network become coplanar as approaching the kagome lattice; eventually, the scalar chirality vanishes for the kagome lattice model.