论文标题
2D中无序晶格中铁磁域的放松
Relaxation of ferromagnetic domains in a disordered lattice in 2D
论文作者
论文摘要
我们研究了2D中铁磁域的放松过程，受到了两者的影响，可变强度和弱相互作用的静态疾病的影响。这些域由$^{87} $ rb Ultracold Atoms的两个物种的骨骨混合物表示，因此最初每个特征都位于平方晶格的左右半部分。双域的动力学之后，在平均磁场水平上描述了两分量的超流体，通过时间依赖的Gross-pitaevskii耦合方程式，考虑到当前实验设置中可确保组件内部的实验设置的物种相互作用的值，可确保组件内部的相互作用的值。对多种物种间相互作用的强大分析使我们得出结论，结构性障碍的存在导致初始铁磁秩序的放松过程减慢了。如我们的数值实验所示，对于最大的疾病振幅，磁化强度的初始值最多可维持其初始值的60％。
We investigate the relaxation process of ferromagnetic domains in 2D subjected to the influence of both, static disorder of variable strength and weak interactions. The domains are represented by a two species bosonic mixture of $^{87}$Rb ultracold atoms, such that initially each specie lies on left and right halves of a square lattice. The dynamics of the double domain is followed by describing the two-component superfluid, at mean field level, through the time dependent Gross-Pitaevskii coupled equations, considering values of the intra and inter-species interaction, reachable in current experimental setups, that guaranty miscibility of the components. A robust analysis for several values inter-species interaction leads us to conclude that the presence of structural disorder leads to slowdown the relaxation process of the initial ferromagnetic order. As shown by our numerical experiments, magnetization is maintained up to 60 percent of its initial value for the largest disorder amplitude.
