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.
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页数：10
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