论文标题
浆果相强制纺纱搭配
Berry Phase Enforced Spinor Pairing
论文作者
论文摘要
配对对称性在超导性研究中起着核心作用。它通常以整数部分波的特征，例如，$ s $ - ，$ p $ - ，$ d $ - waves。在本文中，我们研究了一类新的拓扑超导性，其差距函数具有半odd-integer monopole电荷，因此，在三个维度中，分数化的半odd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-dodd-odder的局部电荷。这种异国情调的配对发生在费米表面之间，其奇数与奇数整数不同。相应的超导间隙函数由带有半功能单极电荷的单极谐波表示，因此携带旋转部分波的对称性。旋转隙函数可以在封闭的费米表面上表现出奇数的节点，从而将其与所有先前已知的超导配对对称性区分开。在存在顺序参数的空间不均匀性的情况下，其超流速速度表现出分数化的Mermin-Ho关系。
Pairing symmetry plays a central role in the study of superconductivity. It is usually characterized by integer partial-waves, for example, $s$-, $p$-, $d$-waves. In this article, we investigate a new class of topological superconductivity whose gap functions possess a half-odd-integer monopole charge and, therefore, fractionalized half-odd-integer partial-wave symmetry in three dimensions. This exotic pairing occurs between Fermi surfaces of which Chern numbers are differed by an odd integer. The corresponding superconducting gap function is represented by monopole harmonics with half-odd-integer monopole charges, and thus carries spinor partial-wave symmetries. The spinor gap function can exhibit an odd number of nodes on a closed Fermi surface, which distinguishes it from all the previously known superconducting pairing symmetry. In the presence of spatial inhomogeneity of order parameters, its superfluid velocity exhibits a fractionalized Mermin-Ho relation.
