Jamming-glass transitions in a frustrated Josephson junction array

约瑟夫森结阵列是超导岛的人工网络，其中岛上的超导序参量的相位通过约瑟夫森耦合彼此相互作用。在外磁场作用下，这种系统变得很强，就像一个虚拟的晶体放在一个弯曲的空间。采用解析和数值相结合的方法研究了正方形晶格上阻挫约瑟夫森结阵列的电流-电压特性和静态特性。我们发现在垂直和水平方向上约瑟夫森耦合各向异性的变化下，系统表现出一种干扰跃迁，并确定了这种跃迁的机制。

Josephson junction arrays are artificial networks of superconducting islands in which the phases of the superconducting order parameter on the islands interact with each other via the Josephson couplings. Under external magnetic fields, such a system becomes strongly frustrated much as a fictitious crystal put in a curved space. We studied the current-voltage property and static properties of a frustrated Josephson junction array on a square lattice by a combination of analytical and numerical approaches. We found that the system exhibits a jamming transition under variation of the anisotropy of the Josephson coupling into the vertical and horizontal directions and identified the mechanism of the transition.