Quantum Monte Carlo study of a two-dimensional Heisenberg antiferromagnet with nonmagnetic impurities
Quantum Monte Carlo study of a two-dimensional Heisenberg antiferromagnet with nonmagnetic impurities
复制标题
含有非磁性杂质的二维海森堡反铁磁体的量子蒙特卡罗研究
DOI：
10.1016/0304-8853(92)90397-7
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发表时间：
1990
影响因子：
2.7
通讯作者：
H. Mikeska
中科院分区：
文献类型：
--
作者：
J. Behre;Seiji Miyashita;H. Mikeska
用量子Monte Carlo方法研究了二维自旋为1/2的含杂质海森堡反铁磁体的磁性。研究了量子效应和稀释效应对有序化过程的综合影响。特别地，计算了亚晶格磁化强度对杂质浓度的依赖关系。结果表明，在非磁性杂质浓度为13%左右时，交错有序度达到最大值，而在纯系统中则没有。
The magnetic properties of a two-dimensional spin-1/2 Heisenberg antiferromagnet with nonmagnetic impurities is studied by the quantum Monte Carlo method. The combined effect of quantum effects and dilution on the ordering process is investigated. In particular, the dependence of sublattice magnetization on impurity concentration is calculated. It is found that the staggered order has its maximum value at a finite concentration of non-magnetic impurities (approximately 13%) but not at the pure system.