TEMPERATURE-DEPENDENCE OF THE PINNING POTENTIAL IN THE HIGH-TEMPERATURE SUPERCONDUCTOR Y1BA2CU3O7-X

被引：4

作者：

DOBBERT, O ^{[1
]}

DINSE, KP ^{[1
]}

GOLDACKER, W ^{[1
]}

WOLF, T ^{[1
]}

机构：

[1] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST THEORET PHYS,W-7500 KARLSRUHE 1,GERMANY

来源：

PHYSICA C | 1991年 / 177卷 / 1-3期

关键词：

D O I：

10.1016/0921-4534(91)90290-F

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Combining the results of magnetization decay and microwave absorption experiments the logarithmic flux decay in twinned YBaCuO crystals was studied over a wide temperature range (Kelvin = 0.1 to 0.8) under conditions of small applied external fields (B = 2.4 mT). The resulting quasi exponential temperature dependence of the pinning potential can be modelled satisfactorily by assuming a structural limitation for the shielding current, resulting from S-N-S barriers. The temperature dependence in the crystalline material is similar to j(cr) (Kelvin) observed for epitaxic YBaCuO films, and leads to an estimate of the barrier width of the order of 10 nm.

引用

页码：17 / 22

页数：6

共 24 条

[11]

FOUKIS V, 1988, PHYSICA C, V156, P467, DOI 10.1016/0921-4534(88)90773-3

[12] DISTRIBUTION OF ACTIVATION-ENERGIES FOR THERMALLY ACTIVATED FLUX MOTION IN HIGH-TC SUPERCONDUCTORS - AN INVERSION SCHEME [J].

HAGEN, CW ;

GRIESSEN, R .

PHYSICAL REVIEW LETTERS, 1989, 62 (24) :2857-2860

[13] FLUX CREEP IN SINGLE-CRYSTALS OF THE HIGH-TEMPERATURE SUPERCONDUCTOR Y1BA2CU3O7-X [J].

HOFFMEISTER, D ;

DOBBERT, O ;

DINSE, KP ;

GOLDACKER, W ;

WOLF, T .

EUROPHYSICS LETTERS, 1989, 8 (04) :369-373

[14]

MANNHART J, 1990, SPRINGER SERIES SOLI, V90, P208

[15] MAGNETIC-RELAXATION IN SINTERED TL2CA2BA2CU3OX AND YBA2CU3O7-X SUPERCONDUCTORS [J].

MCHENRY, ME ;

MALEY, MP ;

VENTURINI, EL ;

GINLEY, DL .

PHYSICAL REVIEW B, 1989, 39 (07) :4784-4787

[16] TIME RELAXATION OF THE UNTWINNED TMBA2CU3O7-DELTA SINGLE-CRYSTAL REMANENT MAGNETIZATION [J].

MOSHCHALKOV, VV ;

GIPPIUS, AA ;

VORONKOVA, VI ;

ZHUKOV, AA .

PHYSICA C, 1989, 162 :1193-1194

[17] FIELD AND TIME-DEPENDENCE OF THE MAGNETIC-SUSCEPTIBILITY OF SINGLE-CRYSTAL YBA2CU3O7 [J].

NISKANEN, K ;

NORLING, P ;

NORDBLAD, P ;

SVEDLINDH, P ;

LUNDGREN, L ;

FOLSTER, J ;

LUNDSTROM, T .

PHYSICA C, 1989, 162 :1637-1638

[18] EXPONENTIAL H-DECAY AND T-DECAY OF THE CRITICAL CURRENT-DENSITY IN YBA2CU3O7-DELTA SINGLE-CRYSTALS [J].

SENOUSSI, S ;

OUSSENA, M ;

COLLIN, G ;

CAMPBELL, IA .

PHYSICAL REVIEW B, 1988, 37 (16) :9792-9795

[19] POSSIBLE JOSEPHSON OSCILLATIONS SPECTRA AND ELECTRON-PARAMAGNETIC RESONANCE OF CU-2+ IN Y-BA-CU-O [J].

STANKOWSKI, J ;

KAHOL, PK ;

DALAL, NS ;

MOODERA, JS .

PHYSICAL REVIEW B, 1987, 36 (13) :7126-7128

[20] RESISTIVE TRANSITION OF HIGH-TEMPERATURE SUPERCONDUCTORS [J].

TINKHAM, M .

PHYSICAL REVIEW LETTERS, 1988, 61 (14) :1658-1661

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