UNIVERSALITY IN THE CURRENT DECAY AND FLUX CREEP OF Y-BA-CU-O HIGH-TEMPERATURE SUPERCONDUCTORS

被引：220

作者：

MALOZEMOFF, AP ^{[1
]}

FISHER, MPA ^{[1
]}

机构：

[1] IBM RES,YORKTOWN HTS,NY 10598

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.42.6784

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recent data on flux creep in a variety of Y-Ba-Cu-O superconductors show a temperature-independent plateau in the magnetization decay Sieq-d lnM(t)/d ln(t), with values clustered in the range S=0.020 0.035. This apparent universality in S, which appears at odds with conventional flux-creep theories, can be explained naturally if one assumes the existence of a truly superconducting ordered phase at low temperatures that has a strongly nonlinear (exponential) I-V characteristic. © 1990 The American Physical Society.

引用

收藏

页码：6784 / 6786

页数：3

相关论文

共 24 条

[1] HARD SUPERCONDUCTIVITY - THEORY OF MOTION OF ABRIKOSOV FLUX LINES [J].

ANDERSON, PW ;

KIM, YB .

REVIEWS OF MODERN PHYSICS, 1964, 36 (1P1) :39-&

[2]

[Anonymous], UNPUB

[3] FLUX CREEP IN TYPE-2 SUPERCONDUCTORS [J].

BEASLEY, MR ;

LABUSCH, R ;

WEBB, WW .

PHYSICAL REVIEW, 1969, 181 (02) :682-&

[4] FLUX VORTICES AND TRANSPORT CURRENTS IN TYPE II SUPERCONDUCTORS [J].

CAMPBELL, AM ;

EVETTS, JE .

ADVANCES IN PHYSICS, 1972, 21 (90) :199-+

[5] FLUX CREEP IN THE CRITICAL STATE OF A HIGH-TEMPERATURE SUPERCONDUCTOR [J].

CAMPBELL, IA ;

FRUCHTER, L ;

CABANEL, R .

PHYSICAL REVIEW LETTERS, 1990, 64 (13) :1561-1564

[6] DEFECT INDEPENDENCE OF THE IRREVERSIBILITY LINE IN PROTON-IRRADIATED Y-BA-CU-O CRYSTALS [J].

CIVALE, L ;

MARWICK, AD ;

MCELFRESH, MW ;

WORTHINGTON, TK ;

MALOZEMOFF, AP ;

HOLTZBERG, FH ;

THOMPSON, JR ;

KIRK, MA .

PHYSICAL REVIEW LETTERS, 1990, 65 (09) :1164-1167

[7] THEORY OF COLLECTIVE FLUX CREEP [J].

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

LARKIN, AI ;

VINOKUR, VM .

PHYSICAL REVIEW LETTERS, 1989, 63 (20) :2303-2306

[8]

FISHER DS, UNPUB

[9] VORTEX-GLASS SUPERCONDUCTIVITY - A POSSIBLE NEW PHASE IN BULK HIGH-TC OXIDES [J].

FISHER, MPA .

PHYSICAL REVIEW LETTERS, 1989, 62 (12) :1415-1418

[10] 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