论文标题
拓扑$ S $ - 由电子相关驱动的超导体
Topological $s$-wave superconductors driven by electron correlation
论文作者
论文摘要
有趣的是，询问电子相互作用是否可以将拓扑琐碎的超导体变成不平凡的超导体，而无需旋转粘液耦合。在本文中，我们准确地解决了相关的$ S $ - 波超导模型。计算了超导基态的费米数均衡性随电子相互作用的函数的变化，并获得了拓扑相图。在掺杂的Mott绝缘子中揭示了拓扑$ S $ - 波超导状态，这通过对拓扑边界零模式的数值研究进一步证实。
It is interesting to ask whether electron interaction can turn a topologically trivial superconductor into a nontrivial one without the presence of spin-obital coupling. In this paper we solve a correlated $s$-wave superconducting model exactly. The variation of the fermion number parity of the superconducting ground state as a function of the electron interaction is calculated and the topological phase diagram is obtained. Topological $s$-wave superconducting states are revealed in the doped Mott insulators, which is further confirmed by the numerical investigation of the topological boundary zero mode.
