Influence of interchain coupling on spiral ground-state correlations in frustrated spin-12J1−J2Heisenberg chains
Influence of interchain coupling on spiral ground-state correlations in frustrated spin-12J1−J2Heisenberg chains
复制标题
链间耦合对受挫自旋 12J1−J2 海森堡链中螺旋基态相关性的影响
DOI：
10.1103/physrevb.79.094425
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发表时间：
2008
影响因子：
3.7
通讯作者：
J. Richter
中科院分区：
文献类型：
--
作者：
R. Zinke;S. Drechsler;J. Richter
我们研究了链间耦合对自旋 1/2 海森堡模型螺旋基态相关性的影响，该模型由具有最近 (J1) 和令人沮丧的次近邻 (J2) 链内交换耦合的二维耦合链阵列组成。使用耦合团簇方法，我们计算了相称和不相称（螺旋）基态之间的转变点以及螺旋基态的量子螺距角。此外，我们还提供了一个简单的经验公式，描述了量子俯仰角与挫败参数 J2/J1 之间的关系。
We investigate the influence of an inter-chain coupling on the spiral ground state correlations of a spin-1/2 Heisenberg model consisting of a two-dimensional array of coupled chains with nearest (J1) and frustrating next-nearest neighbor (J2) in-chain exchange couplings. Using the coupled-cluster method we calculate the transition point between the commensurate and the incommensurate (spiral) ground state as well as the quantum pitch angle of the spiral ground state. In addition, we provide a simple empirical formula which describes the relation between the quantum pitch angle and the frustration parameter J2/J1.