Modified Ambegaokar-Halperin model and dissipation in the polycrystalline Ba2YCu3O7-δ superconductor

被引：0

作者：

Bhalla, GL ^{[1
]}

Malik, P ^{[1
]}

Malik, A ^{[1
]}

机构：

[1] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

来源：

MODERN PHYSICS LETTERS B | 2004年 / 18卷 / 2-3期

关键词：

magnetoresistance; dissipation; vortices; fluctuations;

D O I：

10.1142/S0217984904006718

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetoresistance curves of polycrystalline Ba2YCu3O7-delta samples for H = 0, 1050 and 4880 G axe analyzed using the modified Ambegaokar-Halperin model. The analysis shows the occurrence of a crossover in the R-T curves at a field dependent temperature T-BP, revealing that the dissipation in Ba2YCu3O7-delta samples is possibly caused by two different mechanisms: vortex-dynamics in the low temperature region (below T-BP) and the order parameter fluctuations in the high temperature region (above T-BP).

引用

页码：99 / 103

页数：5

共 50 条

[31] NQR INVESTIGATIONS OF THE HIGH-TC SUPERCONDUCTOR BA2YCU3O7
RIESEMEIER, H
GRABOW, C
SCHEIDT, EW
MULLER, V
LUDERS, K
RIEGEL, D
SOLID STATE COMMUNICATIONS, 1987, 64 (03) : 309 - 312
[32] XPS STUDY OF SUPERCONDUCTOR BA2YCU3O7-DELTA BY VACUUM ANNEALING
HU, DW
WU, NJ
SHEN, DH
QI, SX
CHINESE SCIENCE BULLETIN, 1989, 34 (04): : 269 - 273
[33] SYNTHESIS OF BA2YCU3O7-DELTA SUPERCONDUCTOR THROUGH ORGANOMETALLIC ROUTE
HIRANO, S
HAYASHI, T
MIURA, M
TOMONAGA, H
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1989, 62 (03) : 888 - 892
[34] Electron-microscopic study of the restoration of the structure of Ba2YCu3O7-δ after low-temperature decomposition
Bobylev, I. B.
Kuznetsova, E. I.
Krinitsina, T. P.
Zyuzeva, N. A.
Sudareva, S. V.
Romanov, E. P.
PHYSICS OF METALS AND METALLOGRAPHY, 2009, 107 (05): : 511 - 515
[35] Restoration of the Microstructure of Ba2YCu3O7-δ at T > 900°C after Low-Temperature Decomposition
Bobylev, I. B.
Kuznetsova, E. I.
Krinitsina, T. P.
Zyuzeva, N. A.
Sudareva, S. V.
Romanov, E. P.
PHYSICS OF METALS AND METALLOGRAPHY, 2011, 112 (02): : 165 - 169
[36] Effect of the oxygen partial pressure on the kinetics of decomposition of the Ba2YCu3O7-δ phase at temperatures <400°C
Bobylev, I. B.
Zyuzeva, N. A.
Sudareva, S. V.
Romanov, E. P.
PHYSICS OF METALS AND METALLOGRAPHY, 2007, 103 (04): : 401 - 406
[37] Enhancement of critical magnetization current by the electron irradiation in Ba2YCu3O7 superconductor
Shiraishi, Kensuke, 1600, (28):
[38] Effect of annealing atmosphere on the kinetics and mechanism of low-temperature decomposition of the nonstoichiometric Ba2YCu3O7-δ ceramics
Bobylev, I. B.
Zyuzeva, N. A.
Romanov, E. P.
PHYSICS OF METALS AND METALLOGRAPHY, 2008, 106 (03): : 284 - 290
[39] Effect of substrate temperature and composition on the crystalline state of Ba2YCu3O7-δ magnetron-sputtered thin films
Shirakawa, Yukihiko
Kobayashi, Makoto
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 1989, 28 (08): : 1405 - 1407
[40] PHOTOEMISSION RESONANCES OF THE HIGH-TEMPERATURE SUPERCONDUCTOR BA2YCU3O7+X
ONELLION, M
CHANG, Y
NILES, DW
JOYNT, R
MARGARITONDO, G
STOFFEL, NG
TARASCON, JM
PHYSICAL REVIEW B, 1987, 36 (01): : 819 - 821

← 1 2 3 4 5 →