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arXiv 2009.02425cond-mat.mes-hallcond-mat.mtrl-sci
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约瑟夫森结中的手征拓扑超导电性

Chiral topological superconductivity in Josephson junction

Shao-Kai Jian, Shuai Yin

摘要:

我们考虑半导体层的异质结构夹在两个超导体之间,形成一个二维的约瑟夫森结。在垂直于结的方向施加塞曼场,可以得到具有手征马约拉纳边模的拓扑超导相。我们发现两个超导体之间的相位差可以有效地减少所需的磁场,实现手性拓扑超导,提供了一个实验上可行的设置,实现手性马约拉纳边缘模式。我们还构造了一个晶格哈密顿量的设置,以证明手征马约拉纳边缘模式和马约拉纳束缚态定位在涡旋。

英文摘要:

We consider a heterostructure of semiconductor layers sandwiched between two superconductors, forming a two-dimensional Josephson junction. Applying a Zeeman field perpendicular to the junction can render a topological superconducting phase with chiral Majorana edge mode. We show that the phase difference between two superconductors can efficiently reduce the magnetic field required to achieve the chiral topological superconductivity, providing an experimentally feasible setup to realize chiral Majorana edge modes. We also construct a lattice Hamiltonian of the setup to demonstrate the chiral Majorana edge mode and the Majorana bound state localized in vortices.

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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