A high-temperature superconductor under applied strain: vortex dynamics and critical current density

被引：10
|
作者：
Kashurnikov, Vladimir A. [1 ]
Maksimova, Anastasiia N. [1 ]
Moroz, Anna N. [1 ]
Rudnev, Igor A. [1 ]
机构：
[1] Natl Res Nucl Univ, MEPhI Moscow Engn Phys Inst, Kashirskoe Shosse 31, Moscow 115409, Russia
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2018年 / 31卷 / 11期
基金：
俄罗斯科学基金会;
关键词：
HTSC; vortex dynamics; bending strain; Monte Carlo simulation; critical current density; CRITICAL-CURRENT DEGRADATION; HIGH-T-C; BEHAVIOR; DEFECTS; LATTICE; FILMS;
D O I：
10.1088/1361-6668/aade1d
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
By using the Monte Carlo method, a numerical study has been conducted to investigate the influence of strain on the critical current density and voltage-current characteristics of a high-temperature superconductor. It has been shown that if a sample is strained, the critical current density and the slope of the E-J curve decrease. Staircase E-J curves of strained samples corresponding to alternating states of vortex freezing and defreezing have been discovered. Vortex dynamics has been demonstrated for different degrees of strain. A possibility of almost unhindered movement of vortices towards the center of the sample along the occurring areas of stress has been shown for heavily strained samples.
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页数：9
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