scholarly journals Critical currents and thermally activated flux motion in high‐temperature superconductors

1989 ◽  
Vol 54 (8) ◽  
pp. 763-765 ◽  
Author(s):  
T. T. M. Palstra ◽  
B. Batlogg ◽  
R. B. van Dover ◽  
L. F. Schneemeyer ◽  
J. V. Waszczak
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Critical Currents ◽  
Thermally Activated ◽  
Flux Motion ◽  
Activated Flux

Thermally Activated Flux Motion in 2223 Phase High Temperature Superconductors

1992 ◽  
Vol 9 (4) ◽  
pp. 206-208 ◽  
Author(s):  
Chen Jun ◽  
Li Gang ◽  
Li Chuanyi ◽  
Feng Qingrong ◽  
Zhang Han ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Thermally Activated ◽  
Flux Motion ◽  
Activated Flux

Thermally activated flux creep in strongly layered high-temperature superconductors

1990 ◽  
Vol 42 (4) ◽  
pp. 2143-2148 ◽  
Author(s):  
Sudip Chakravarty ◽  
Boris I. Ivlev ◽  
Yuri N. Ovchinnikov
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Flux Creep ◽  
Thermally Activated ◽  
Activated Flux

Considerations Limiting Zero-Resistance Currents in High-Temperature Superconductors

1989 ◽  
Vol 169 ◽  
Author(s):  
M. Tinkham
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Melting Transition ◽  
Thermally Activated ◽  
Flux Motion ◽  
Flux Lattice ◽  
Zero Resistance

AbstractThe fundamental processes governing the appearance of dissipation due to flux motion in superconductors are reviewed. The dominant thermally‐activated resistive processes are discussed, and evidence for a sharp melting transition of the flux lattice is assessed.

COMPLEX SUSCEPTIBILITY, MAGNETIZATION AND ELECTRICAL RESISTIVITY OF HIGH TEMPERATURE SUPERCONDUCTORS

1990 ◽  
Vol 04 (01) ◽  
pp. 63-75 ◽  
Author(s):  
KAI XUAN CHEN ◽  
GUO LU ◽  
YUAN DONG DAI ◽  
CHONG DE WEI ◽  
LI XIN XUE ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
High Temperature ◽  
High Temperature Superconductors ◽  
Peak Temperature ◽  
Creep Model ◽  
Loop Model ◽  
Thermally Activated ◽  
Low Field ◽  
Complex Susceptibility ◽  
Activated Flux

ac complex susceptibility, χ′ and χ″, dc magnetization and electrical resistivity of sintered superconductors Bi–Pb–Sr–Ca–Cu–O and Y–Ba–Cu–O have been measured. The results show two non-linear 2/3 power behaviors: field dependence of χ″ peak temperature, a quasi de Almeida-Thouless line, and a irreversibility line. The former corresponds to the property of intergrain material measured at low field, it can be interpreted by superconductive glass state in high-T c superconductor and/or the weakly connected loop model. The latter corresponds to the property of intragrain material measured at higher field, it can be interpreted by the thermally activated flux creep model. Moreover, the field dependences of width and height of χ″ peak are also exhibited. Finally, we have measured the I – V characteristics at 103.8 K for Bi–Pb–Sr–Ca–Cu–O sample and suggested the relation between the χ″ peak temperature and the zero dissipation temperature.

Limits to critical currents in high-temperature superconductors: What we can learn from tailored defects

1992 ◽  
Author(s):  
D. K. Christen ◽  
J. R. Thompson ◽  
H. R. Kerchner ◽  
B. C. Sales ◽  
B. C. Chakoumakos ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Critical Currents
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