Vortex lattices in binary mixtures of repulsive superfluids
Vortex lattices in binary mixtures of repulsive superfluids
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排斥性超流体二元混合物中的涡晶格
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
R. Barnett
中科院分区：
文献类型：
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作者：
Luca Mingarelli;E. Keaveny;R. Barnett
我们提出了一个扩展的框架中介绍的[1]来处理多组分系统，表明新的自由度是必要的，以获得所需的边界条件。然后，我们将这个扩展的框架应用于耦合的Gross-Pitaevskii方程，以研究具有相等质量的两组分系统的基态，从而将先前在最低朗道极限[2]中的工作扩展到Gross-Pitaevskii理论中的任意相互作用。我们发现，远离最低朗道能级极限，占主导地位的涡旋晶格由两个交错的三角形晶格。最后，我们推导出一个线性关系，它准确地描述了强相互作用制度的相边界。
We present an extension of the framework introduced in [1] to treat multicomponent systems, showing that new degrees of freedom are necessary in order to obtain the desired boundary conditions. We then apply this extended framework to the coupled Gross-Pitaevskii equations to investigate the ground states of two-component systems with equal masses thereby extending previous work in the lowest Landau limit [2] to arbitrary interactions within Gross-Pitaevskii theory. We show that away from the lowest-Landau level limit, the predominant vortex lattice consists of two interlaced triangular lattices. Finally, we derive a linear relation which accurately describes the phase boundaries in the strong interacting regimes.