标题： 无序多端约瑟夫森结弗劳恩霍夫衍射图样的二极管效应 显示英文标题

标题： Diode effect in Fraunhofer patterns of disordered multi-terminal Josephson junctions

摘要： 我们研究了不同空间非均匀性在宽约瑟夫森结的弗劳恩霍夫图样中产生超导二极管效应条件的作用。 通过散射矩阵方法，我们强调了结的镜像对称性在禁止双端和多端情况下二极管效应的作用。 作为镜像对称性破坏的来源，我们研究了相对于系统大小的长波长和短波长空间势，分别模拟了侧栅和原子尺度无序的影响，以及结的几何形状，并评估它们对二极管效应的影响。 作为一个共同趋势，我们观察到在破坏干涉的情况下，弗劳恩霍夫图样的节点点上出现定性相似的整流模式。 在多端镜像对称设置中，我们将附加端子的相位单独指出为一个可控制的旋钮，以调节有限磁场下的二极管效应。 这项工作全面探讨了纯空间非均匀性在宽结中出现二极管效应的作用。 显示英文摘要

摘要： We study the role of different spatial inhomogeneities in generating the conditions for the appearance of a superconducting diode effect in the Fraunhofer pattern of wide Josephson junctions. Through the scattering matrix approach, we highlight the role of mirror symmetry of the junction in forbidding the diode effect in both the two-terminal and the multi-terminal case. As sources of mirror symmetry breaking, we study spatial potentials of long and short wavelength with respect to the size of the system, mimicking the effect of side gates and atomic scale disorder, respectively, as well as the geometry of the junction, and assess their impact on the diode effect. As a common trend, we observe qualitatively similar rectification patterns magnified at the nodal points of the Fraunhofer pattern by destructing interference. In multi-terminal mirror-symmetric setups, we single out the phase at additional terminals as a controllable knob to tune the diode effect at the finite field. The work presents a comprehensive treatment of the role of pure spatial inhomogeneity in the emergence of a diode effect in wide junctions.