论文标题
二维非共同XY XY抗铁磁铁中的随机束缚障碍：从准长范围到旋转玻璃
Random-bond disorder in two-dimensional non-collinear XY antiferromagnets: From quasi-long-range order to spin glass
论文作者
论文摘要
我们使用分析和数值技术的组合研究了两个空间尺寸的挫折易受平面抗铁磁体中淬火键障碍的影响。我们将局部矩系统视为零温度下的非共同长期阶数，而反铁磁三角晶格XY模型是一个典型示例。我们表明（i）弱键障碍将干净的基态转化为具有准长范围的状态，并且（ii）强键障碍会导致短距离订购的玻璃基态。使用大量的蒙特卡洛模拟，我们还在有限温度和相关的kosterlitz-无效的过渡时跟踪了准长订购相的命运。与先前对无序XY模型的研究接触，我们讨论了有关混乱和挫败感相互作用的相似性和差异。我们的结果也与外部磁场中的非共线性海森堡磁铁有关。
We study effects of quenched bond disorder in frustrated easy-plane antiferromagnets in two space dimensions, using a combination of analytical and numerical techniques. We consider local-moment systems which display non-collinear long-range order at zero temperature, with the antiferromagnetic triangular-lattice XY model as a prime example. We show that (i) weak bond disorder transforms the clean ground state into a state with quasi-long-range order, and (ii) strong bond disorder results in a short-range-ordered glassy ground state. Using extensive Monte Carlo simulations, we also track the fate of the quasi-long-range-ordered phase at finite temperature and the associated Kosterlitz-Thouless-like transition. Making contact with previous studies of disordered XY models, we discuss similarities and differences concerning the interplay of disorder and frustration. Our results are also of relevance to non-collinear Heisenberg magnets in an external magnetic field.
