Three-dimensional Ginzburg-Landau simulation of a vortex line displaced by a zigzag of pinning spheres

Pramana

Mauro M Doria1¹  Antonio R de C Romaguera¹  Welles A M Margado² 

[1] Instituto de Física, Universidade Federal do Rio de Janeiro, C.P. 68528, 21941-972, Rio de Janeiro RJ, Brazil$$;Instituto de Física, Pontifícia Universidade Católica do Rio de Janeiro, C.P. 38071, 22452-970, Rio de Janeiro RJ, Brazil$$

关键词: Ginzburg-Landau;    tridimensional solution;    pinning theory.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

A vortex line is shaped by a zigzag of pinning centers and we study here how far the stretched vortex line is able to follow this path. The pinning center is described by an insulating sphere of coherence length size such that in its surface the de Gennes boundary condition applies. We calculate the free energy density of this system in the framework of the Ginzburg-Landau theory and study the critical displacement beyond which the vortex line is detached from the pinning center.

【 授权许可】

Unknown