Universal transport and magnetic properties of YBCO and TBCCO films

被引:3
作者
Jung, J [1 ]
Yan, H [1 ]
Darhmaoui, H [1 ]
Kwok, WK [1 ]
机构
[1] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada
来源
SUPERCONDUCTING AND RELATED OXIDES: PHYSICS AND NANOENGINEERING III | 1998年 / 3481卷
关键词
Josephson nanostructures; critical current; vortex pinning; high temperature superconductors;
D O I
10.1117/12.335867
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have investigated a temperature dependence of the critical current density J(c)(T) and a dependence of the energy barrier for vortex motion on current density U-eff(J) in several YBCO and TBCCO thin films. The measurements have been done using rings in a persistent mode and a scanning Hall probe to record J(c)(T) and U-eff(J) The results revealed that both quantities exhibit a universal behaviour governed by an intrinsic property of these superconductors; Josephson nanostructures in the a-b planes of YBCO and TBCCO.
引用
收藏
页码:172 / 181
页数:10
相关论文
共 7 条
[1]   AMBEGAOKAR-BARATOFF-GINZBURG-LANDAU CROSSOVER EFFECTS ON THE CRITICAL CURRENT-DENSITY OF ANTIGRANULOCYTES SUPERCONDUCTORS [J].
CLEM, JR ;
BUMBLE, B ;
RAIDER, SI ;
GALLAGHER, WJ ;
SHIH, YC .
PHYSICAL REVIEW B, 1987, 35 (13) :6637-6642
[2]   Crossover effects in the temperature dependence of the critical current in YBa2Cu3O7-delta [J].
Darhmaoui, H ;
Jung, J .
PHYSICAL REVIEW B, 1996, 53 (21) :14621-14630
[3]   SUPERCONDUCTIVITY IN BAD METALS [J].
EMERY, VJ ;
KIVELSON, SA .
PHYSICAL REVIEW LETTERS, 1995, 74 (16) :3253-3256
[4]   Structural perturbations at intervals of the coherence length in YBa2Cu3O7-delta (delta<0.1) [J].
Etheridge, J .
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1996, 73 (03) :643-668
[5]   DEPENDENCE OF FLUX-CREEP ACTIVATION-ENERGY UPON CURRENT-DENSITY IN GRAIN-ALIGNED YBA2CU3O7-X [J].
MALEY, MP ;
WILLIS, JO ;
LESSURE, H ;
MCHENRY, ME .
PHYSICAL REVIEW B, 1990, 42 (04) :2639-2642
[6]   EFFECT OF PHASE FLUCTUATIONS ON THE LOW-TEMPERATURE PENETRATION DEPTH OF HIGH-T-C SUPERCONDUCTORS [J].
RODDICK, E ;
STROUD, D .
PHYSICAL REVIEW LETTERS, 1995, 74 (08) :1430-1433
[7]  
TINKHAM M, 1996, INTRO SUPERCONDUCTIV, P205