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arXiv 1012.2492cond-mat.supr-concond-mat.mes-hall
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拓扑超导体中Josephson涡旋的Majorana束缚态的观测

Observing Majorana bound states of Josephson vortices in topological superconductors

Eytan Grosfeld, Ady Stern

摘要:

近年来,在凝聚态系统中对马约拉纳费米子态进行了深入的研究。预测在某些非常规超导体中,它们被定位在涡旋的核心上,已知它们的存在使大块涡旋的交换统计非阿贝尔。本文研究了拓扑超导体中长约瑟夫森结中相孤子(磁通子)的动力学方程。我们表明,通量将绑定本地化的零能量马约拉纳模式,因此将表现为非阿贝尔任意子。通量子的低质量,以及其实验观察到的量子机械波样的性质,将使其成为一个合适的候选人涡旋干涉实验证明非阿贝尔统计。我们建议两个实验,可能会揭示存在的零模式进行的通量。具体的实验实现也将讨论。

英文摘要:

In recent years there has been an intensive search for Majorana fermion states in condensed matter systems. Predicted to be localized on cores of vortices in certain non-conventional superconductors, their presence is known to render the exchange statistics of bulk vortices non-Abelian. Here we study the equations governing the dynamics of phase solitons (fluxons) in a long Josephson junction in a topological superconductor. We show that the fluxon will bind a localized zero energy Majorana mode and will consequently behave as a non-Abelian anyon. The low mass of the fluxon, as well as its experimentally observed quantum mechanical wave-like nature, will make it a suitable candidate for vortex interferometry experiments demonstrating non-Abelian statistics. We suggest two experiments that may reveal the presence of the zero mode carried by the fluxon. Specific experimental realizations will be discussed as well.

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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