Case Studies on Time-Dependent Ginzburg-Landau Simulations for Superconducting Applications  

作　　者：Cun Xue Qing-Yu Wang Han-Xi Ren An He Alejandro V.Silhanek 

机构地区：[1]School of Mechanics,Civil Engineering and Architecture,Northwestern Polytechnical University,Xi’an 710072,China [2]School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China [3]College of Science,Chang’an University,Xi’an 710064,China [4]Department of Physics,Universitéde Liège,B-4000 Sart Tilman,Belgium

出　　处：《Electromagnetic Science》2024年第2期1-20,共20页电磁科学（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.12372210 and 11972298).

摘　　要：The macroscopic electromagnetic properties of type-II superconductors are mainly influenced by the behavior of micro-scopic superconducting flux quantum units.Time-dependent Ginzburg-Landau(TDGL)theory is a well-known tool for describing and examining both the statics and dynamics of these superconducting entities.It have been instrumental in replicating and elucidat-ing numerous experimental results over the past decades.This paper provides a comprehensive overview of the progress in TDGL simulations,focusing on three key aspects of superconductor applications.We delve first into vortex rectification in supercon-ductors described within the TDGL framework,specifically highlighting the achievement of superconducting diode effect through asymmetric pinning landscapes and the reversible manipulation of vortex ratchets with dynamic pinning landscapes.In terms of the achievements of TDGL simulations concerning the critical current density of superconductors,we emphasize particularly on the optimization of pinning sites,including vortex pinning and dynamics in polycrystalline Nb3Sn with grain boundaries.In the third aspect,we concentrate on numerical modeling of vortex penetration and dynamics in superconducting radio-frequency cavities,including a discussion on superconductor-insulator-superconductor multilayer structures.Finally,we present key findings,insights,and perspectives derived from the discussed simulations.

关 键 词：Time-dependent Ginzburg-Landau Vortex rectification Critical current density Superconducting radio-frequen-cy cavities 

分 类 号：O35[理学—流体力学]