Flux pinning evolution in multilayer Pb/Ge/Pb/Ge/Pb superconducting systems

作     者：高礼鑫 张晓珂 张安蕾 肖祁陵 陈飞 葛军饴 Li-Xin Gao;Xiao-Ke Zhang;An-Lei Zhang;Qi-Ling Xiao;Fei Chen;Jun-Yi Ge

作者机构：Materials Genome InstituteShanghai UniversityShanghai 200444China Shanghai Key Laboratory for High Temperature SuperconductorsShanghai UniversityShanghai 200444China Zhejiang LaboratoryHangzhou 311100China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2023年第32卷第3期

页      面：491-496页

核心收录：

学科分类：080705[工学-制冷及低温工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 12174242) the National Key Research and Development Program of China (Grant No. 2018YFA0704300) the Key Research Project of Zhejiang Laboratory (Grant No. 2021PE0AC02) the support by the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning 

主　　题：multilayer superconducting film competing interaction flux pinning mechanism 

摘      要：Multicomponent superconductors exhibit nontrivial vortex behaviors due to the various vortex–vortex interactions,including the competing one in the recently proposed type-1.5 ***,potential candidate that can be used to study the multicomponent superconductivity is ***,we prepared an artificial superconducting multilayer to act as an alternative approach to study multicomponent *** additional repulsive length and the coupling strength among superconducting films were regulated by changing the thickness of the insulting *** magnetization measurements were performed to clarify the effect of the competition between the repulsive vortex interactions on the macroscopic *** vortex phase diagram and the optimum critical current density have been ***,a second magnetization effect is observed,and is attributed to the upper layer,which provides the weak pinning sites to localize the flux *** pinning behaviors switches to the mixed type with the increase of the insulting layer *** results open a new perspective to the study and related applications of the multilayer superconducting systems.