FLUX LINE DYNAMICS IN CRYSTAL YBA2CU3O7-DELTA STUDIED BY MECHANICAL MEASUREMENTS

被引：20
作者：
DEBRION, S
CALEMCZUK, R
HENRY, JY
机构：
[1] Département de Recherche Fondamentale de la Matière Condensée, Centre d'Etudes Nucléaires, 38 041 Grenoble Cedex
来源：
PHYSICA C | 1991年 / 178卷 / 1-3期
关键词：
D O I：
10.1016/0921-4534(91)90181-W
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have studied the flux line dynamics and its anisotropy in a crystal YBa2Cu3O(x) as a function of the magnetic field and the oxygen content; 0.5 T < H< 7 T, x = 6.9 and 6.6. At low temperature, the observed behavior is in agreement with a pinned flux line lattice. A residual dissipation appears depending both on x and H. The irreversibility line was also investigated: for H perpendicular-to c, the line remains steep and close to T(c) whereas for H parallel-to c, it moves apart in particular as x is decreased with H is-proportional-to (1-(T/T(c)))3/2. These results are interpreted within the model of thermally activated flux flow.
引用
收藏
页码：225 / 230
页数：6
相关论文
共 33 条
[1]   FLUX DYNAMICS IN A SINTERED BULK HIGH-TEMPERATURE SUPERCONDUCTOR [J].
BAAR, DJ ;
HARRISON, JP .
PHYSICA C, 1989, 157 (02) :215-220
[2]   ANISOTROPIC SUPERCONDUCTING PROPERTIES OF YBA2CU3O7(0.1) AND YBA2CU3O7(0.4) UNTWINNED SINGLE-CRYSTALS [J].
BAUHOFER, W ;
BIBERACHER, W ;
GEGENHEIMER, B ;
JOSS, W ;
KREMER, RK ;
MATTAUSCH, H ;
MULLER, A ;
SIMON, A .
PHYSICAL REVIEW LETTERS, 1989, 63 (22) :2520-2523
[3]   FLUX DIFFUSION IN HIGH-TC SUPERCONDUCTORS [J].
BRANDT, EH .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1990, 80 (02) :167-175
[4]   A SUPERCONDUCTING VIBRATING REED APPLIED TO FLUX-LINE PINNING .1. THEORY [J].
BRANDT, EH ;
ESQUINAZI, P ;
NECKEL, H .
JOURNAL OF LOW TEMPERATURE PHYSICS, 1986, 63 (3-4) :187-214
[5]   THERMAL FLUCTUATION AND MELTING OF THE VORTEX LATTICE IN OXIDE SUPERCONDUCTORS [J].
BRANDT, EH .
PHYSICAL REVIEW LETTERS, 1989, 63 (10) :1106-1109
[6]   EVIDENCE FROM MECHANICAL MEASUREMENTS FOR FLUX-LATTICE MELTING IN SINGLE-CRYSTAL YBA2CU3O7 AND BI2.2SR2CA0.8CU2O8 - COMMENT [J].
BRANDT, EH ;
ESQUINAZI, P ;
WEISS, G .
PHYSICAL REVIEW LETTERS, 1989, 62 (19) :2330-2330
[7]   DYNAMIC AND STATIC MECHANICAL MEASUREMENTS OF FLUX-LATTICE SOFTENING AND ASSOCIATED HYSTERETIC DEPINNING DISSIPATION PEAK IN YBA2CU3OX CERAMIC [J].
DANNA, G ;
BENOIT, W ;
LUZURIAGA, J ;
BERGER, H .
EUROPHYSICS LETTERS, 1990, 13 (05) :465-471
[8]  
DEBRION S, UNPUB
[9]   FREQUENCY AND FIELD-DEPENDENCE OF THE IRREVERSIBILITY LINE IN A YBA2CU3O7-DELTA FILM [J].
EMMEN, JHPM ;
STOLLMAN, GM ;
DEJONGE, WJM .
PHYSICA C, 1990, 169 (5-6) :418-424
[10]   THE DEPINNING LINE OF A Y(GD)BA2CU3OX SINGLE-CRYSTAL [J].
ESQUINAZI, P ;
GUPTA, A ;
BRAUN, HF .
PHYSICA B, 1990, 165 :1151-1152
1234