标题： UTe$_2$中安德烈夫平坦陆地的拓扑起源：对约瑟夫森 STM 测量的影响 显示英文标题

标题： Topological Origin of Andreev Flatland in UTe$_2$: Implication for Josephson STM Measurements

摘要： 我们提议利用拓扑超导体的表面作为实现二维平带的平台，在这里电子相互作用起着至关重要的作用。 表面平带源于由两种关键机制支持的拓扑特性：（1）平凡的Chern数阻止零能态合并到体态谱的连续区，从而确保它们被限制在超导能隙内；（2）弱自旋守恒允许能隙函数表现出相位缠绕。 因此，表面在接近零能处显示出显著高的态密度。 这种表面态很可能在候选拓扑超导体UTe$_2$中实现。 我们的结果为解释最近关于UTe$_2$的Josephson STM实验提供了重要见解。 显示英文摘要

摘要： We propose the surface of topological superconductors as a platform for realizing two-dimensional flat bands, where electron interactions play a crucial role. The surface flat bands originate from topological features supported by two key mechanisms: (1) a trivial Chern number prevents the zero-energy states from merging into the continuum of the bulk spectrum, thereby ensuring their confinement within the superconducting gap; and (2) weak spin conservation allows the gap function to exhibit phase winding. As a consequence, the surface exhibits a remarkably high density of states at nearly zero energy. Such surface states are likely to be realized in the candidate topological superconductor UTe$_2$. Our results provide important insights into the interpretation of recent Josephson STM experiments on UTe$_2$.