Random organization of vortices under an anisotropic condition

29th International Symposium on Superconductivity

Ienaga, K.^1 ; Dobroka, M.^1 ; Shirahata, Y.^1 ; Kawamura, Y.^1 ; Kaneko, S.^1 ; Okuma, S.^1

Department of Physics, Tokyo Institute of Technology, 2-12-1 Ohokayama, Meguro-ku, Tokyo

152-8551, Japan^1

关键词: AC drives;    Colliding particles;    Organization changes;    Random pinning;    Self-organize;    Tilted fields;    Vortex systems;    Vortex-vortex interaction;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/871/1/012020/pdf
DOI  :  10.1088/1742-6596/871/1/012020

来源: IOP

【 摘 要 】

Many colliding particles that are periodically sheared by ac drive self-organize to avoid future collisions, which is known as random organization. Recently, we have observed the random organization in the vortex system of a strip-shaped amorphous MoxGe1-xfilm, where the vortices experience periodic local shear from ac drive and the random pinning potential. In this work, we study how random organization changes in the vortex system under the tilted field, where an anisotropic vortex-vortex interaction is introduced. We find that characteristic times of random organization for the vortices driven in the tilted direction are significantly smaller than those in the untilted field.