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arXiv 0710.5550cond-mat.other
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循环旋量凝聚中的涡旋晶格转变

Vortex lattice transitions in cyclic spinor condensates

Ryan Barnett, Subroto Mukerjee, Joel E. Moore

摘要:

本文研究了F=2旋量玻色凝聚循环相中旋转产生的涡旋和涡旋晶格的能量学。除了由Tkachenko预测的$^4$ He的熟悉的三角形晶格之外,由于自旋自由度,在这个系统中出现了许多更复杂的晶格。特别是,我们预测磁场驱动的过渡从三角形晶格到蜂窝晶格。其他的过渡和晶格几何形状的变化,在恒定的电场中的温度依赖的比率的电荷和自旋刚度,包括通过一个非周期性的涡旋结构的过渡。

英文摘要:

We study the energetics of vortices and vortex lattices produced by rotation in the cyclic phase of F=2 spinor Bose condensates. In addition to the familiar triangular lattice predicted by Tkachenko for $^4$He, many more complex lattices appear in this system as a result of the spin degree of freedom. In particular, we predict a magnetic-field-driven transition from a triangular lattice to a honeycomb lattice. Other transitions and lattice geometries are driven at constant field by changes in the temperature-dependent ratio of charge and spin stiffnesses, including a transition through an aperiodic vortex structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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