arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.3144cond-mat.mes-hall
收藏

螺旋液体中库珀对的Hanbury Brown和Twiss关联

Hanbury Brown and Twiss Correlations of Cooper Pairs in Helical Liquids

Mahn-Soo Choi

摘要:

提出了量子自旋霍尔绝缘体边缘沟道上库珀对的Hanbury Brown和Twiss(HBT)实验。螺旋边缘通道提供了一个良好定义的库珀对和完美的Andreev反射束从超导体。令人惊讶的是,库珀对一旦从超导体中发射出来,就根本不具有玻色子性质,并且与自由电子一样,交叉相关是强烈的负相关。这个结果是反直觉的,似乎与以前的理论和最近的实验结果相矛盾。我们将指出,我们的设置是更接近的精神,原来的HBT实验(和不同)比以前的作品。我们认为,这些差异会显著影响结果。

英文摘要:

We propose a Hanbury Brown and Twiss (HBT) experiment of Cooper pairs on the edge channels of quantum spin Hall insulators. The helical edge channels provide a well defined beam of Cooper pairs and perfect Andreev reflections from superconductors. Surprisingly, the Cooper pairs do not bear a bosonic nature at all once emitted from the superconductor, and the cross correlation is strongly negative as for free electrons. This result is counter-intuitive, and seemingly contradictory to the previous theoretical and recent experimental results. We will point out that our setup is much closer in spirit to the original HBT experiment (and different) than those in previous works. We will argue that these differences affect significantly the results.

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。

↑