论文标题
手性$ p $ - 扭曲的近亲量子线中的超导性
Chiral $p$-wave superconductivity in a twisted array of proximitized quantum wires
论文作者
论文摘要
$ p_x+ip_y $订单的超导体长期以来一直着迷于物理社区，因为在这样的系统中，涡流缺陷主机Majorana零模式。在这里，我们建议使用近代化量子线和扭转角工程作为基本成分简单地构造手性超导体。我们表明，此类电线的弱耦合并联阵列形成了无间隙$ P $ - 波超导体。两个这样的阵列，彼此堆叠，扭曲角接近$ 90^\ circ $，自发打破时间逆转对称性，并形成强大的，完全散布的$ p_x+ip_y $ superconductor。我们绘制了所提出系统的拓扑阶段，显示了涡流中Majorana零模式的存在，并讨论了实验实现的前景。
A superconductor with $p_x+ip_y$ order has long fascinated the physics community because vortex defects in such a system host Majorana zero modes. Here we propose a simple construction of a chiral superconductor using proximitized quantum wires and twist angle engineering as basic ingredients. We show that a weakly coupled parallel array of such wires forms a gapless $p$-wave superconductor. Two such arrays, stacked on top of one another with a twist angle close to $90^\circ$, spontaneously break time reversal symmetry and form a robust, fully gapped $p_x+ip_y$ superconductor. We map out topological phases of the proposed system, demonstrate existence of Majorana zero modes in vortices, and discuss prospects for experimental realization.
