论文标题
约瑟夫森连接的手性拓扑超导
Chiral topological superconductivity in Josephson junction
论文作者
论文摘要
我们考虑了夹在两个超导体之间的半导体层的异质结构，形成了二维的约瑟夫森交界处。使用垂直于连接的Zeeman场可以通过手性Majorana边缘模式呈现拓扑超导阶段。我们表明，两个超导体之间的相位差可以有效地减少达到手性拓扑超导性所需的磁场，从而提供实验可行的设置以实现手性Majorana边缘模式。我们还构建了设置的晶格哈密顿量，以展示手性的Majoraana边缘模式和Majorana绑定的状态定位在涡流中。
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.
