论文标题
2D超导接近阵列中的动态涡流摩托车过渡
Dynamic Vortex-Mott Transition in 2D Superconducting Proximity Arrays
论文作者
论文摘要
范式的莫特绝缘子出现在密切相关的系统中，在强度相关的系统中，强烈的局部排斥将相互作用的颗粒定位在基本的卵子样电势中。相应的Mott转变反映了通过系统和温度的不同参数或通过施加的电流的不同参数来反映电荷的定位，后者称为动态Mott Transition。最近，在被周期性接近阵列捕获的涡旋系统上观察到了动态莫特过渡，并用非弱点的非平衡过程理论进行了描述。在这里，我们以数值方式研究了在超导膜中以一系列孔阵列实现的涡流动态MOTT转变，并发现差异电阻的引人注目的非单声道行为是与匹配场相对与统一填充因子相对应的匹配场时所施加电流的函数。
The paradigmatic Mott insulator arises in strongly correlated systems, where strong local repulsion localizes interacting particles in underlying egg-holder-like potential. The corresponding Mott transition reflects delocalization of the charges either by varying parameters of the system and temperature, or by applied current, the latter being referred to as the dynamic Mott transition. Recently, the dynamic Mott transition was experimentally observed on the vortex system trapped by the periodic proximity array and described in terms of non-Hermitian theory of nonequilibrium processes. Here we investigate numerically the vortex dynamic Mott transition in an proximity array implemented as an array of holes in a superconducting films and discover striking nonmonotonic behavior of the differential resistance as function of the applied current when deviating from the matching field corresponding to a unity filling factor.
