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arXiv 1009.0263cond-mat.supr-con
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二维Abrikosov涡旋固体的连续热熔化

Continuous thermal melting of a two-dimensional Abrikosov vortex solid

J. Iaconis, R. G. Melko, A. A. Burkov

摘要:

我们研究了二维超导体或中性超流体中三角形Abrikosov涡旋固体的热熔化问题。我们引入了一个模型,它结合了最低朗道能级(LLL)投影与磁Wannier基来表示LLL中的简并本征态。通过大规模的蒙特卡罗模拟数值求解模型,我们发现了连续熔化过渡的明确证据,与Kosterlitz-Halperin-Nelson-Young理论和最近的实验完全一致。

英文摘要:

We examine the question of thermal melting of the triangular Abrikosov vortex solid in two-dimensional superconductors or neutral superfluids. We introduce a model, which combines lowest Landau level (LLL) projection with the magnetic Wannier basis to represent degenerate eigenstates in the LLL. Solving the model numerically via large-scale Monte Carlo simulations, we find clear evidence for a continuous melting transition, in perfect agreement with the Kosterlitz-Thouless-Halperin-Nelson-Young theory and with recent experiments.

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