论文标题
在旋转链中竞争远距离相互作用和自旋矢量手性
Competing long-range interactions and spin vector chirality in spin-chains
论文作者
论文摘要
近年来，一维磁链中的竞争顺序的研究引起了很大的关注，因为发现远程海森堡相互作用的存在允许有趣的量子相变。我们在这里研究了自旋轨道效应的作用，通过在共线和非共线长距离相互作用的情况下考虑自旋1/2链。通过使用精确的对角度化和密度矩阵重新归一化组计算，我们研究了该系统的丰富相图。我们发现，随着非共线耦合的强度增加，从共线到横向磁相关顺序的过渡，并伴随着系统的矢量自旋手性阶参数的跳跃。这表明，调整长距离相互作用可以控制系统中相当的矢量自旋手性的发作，该旋转手性可用于向下传输信息。我们研究了不同阶段的特征结构，并探索了它们在不同材料系统中的物理实施。
Studies of competing orders in 1D magnetic chains have attracted considerable attention in recent years, as the presence of long-range Heisenberg interactions is found to allow interesting quantum phase transitions. We investigate here the role of spin-orbit effects by considering spin-1/2 chains in the presence of both collinear and non-collinear long-range interactions. By employing exact diagonalization and density matrix renormalization group calculations we investigate the rich phase diagram of this system. We find transitions from collinear to transverse magnetic correlated order as the strength of the non-collinear coupling increases, accompanied by a jump in the vector spin chirality order parameter of the system. This shows that tuning long-range interactions allows control of the onset of sizable vector spin chirality in a system, which may be used to transmit information down the chain. We investigate the characteristic structure of the distinct phases and explore their possible physical implementation in different materials systems.
