EFFECTS OF INTERNAL DEFECT ON THE VORTEX ENTRANCE IN MESOSCOPIC SUPERCONDUCTOR

被引：1

作者：

Barba-Ortega, J. ^{[1
]}

Joya, Miryam R. ^{[1
]}

Marques, Gilmar E. ^{[2
]}

机构：

[1] Univ Nacl Colombia, Dept Fis, Bogota 1149, Colombia

[2] Univ Fed Sao Carlos, Dept Fis, BR-13560905 Sao Carlos, SP, Brazil

来源：

MODERN PHYSICS LETTERS B | 2013年 / 27卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

Ginzburg-Landau; superconducting; mesoscopics; defect; THIN-FILMS; THICKNESS; SURFACE; RINGS; STATE;

D O I：

10.1142/S0217984913500759

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, we report on the influence of an internal defect on the vortex entrance in a mesoscopic superconducting sample. Effects associated to the pinning force of the defect on the configuration and on the vortex entry fields are studied for a very thin disk. We calculate the supercurrent, magnetization, vorticity, free energy and Cooper pairs density for a disk in presence of external magnetic field applied perpendicular to the disk plane. Due to vortex-defect attraction (repulsion), the vortices always (never) are found to be sitting on the defect position.

引用

页数：10

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