Anisotropic vortex pinning in superconductors with a square array of rectangular submicron holes

Article

关键词: REGULAR ARRAYS;    VORTICES;    FILMS;    LATTICE;    MAGNETIZATION;    DYNAMICS;    DISORDER;   

DOI  :  10.1103/PhysRevB.66.214511

来源: SCIE

【 摘 要 】

We investigate vortex pinning in thin superconducting films with a square array of rectangular submicron holes (antidots). Two types of antidots are considered: antidots fully perforating the superconducting film and blind antidots, holes that perforate the film only up to a certain depth. In both systems, we observe a distinct anisotropy in the pinning properties, reflected in the critical current I-c, depending on the direction of the applied electrical current: parallel to the long side of the antidots or perpendicular to it. Although the mechanism responsible for the effect is very different in the two systems, they both show a higher critical current and a sharper I-V transition when the current is applied along the long side of the rectangular antidots.

【 授权许可】

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