FLUX CREEP IN A SINUSOIDAL WASHBOARD POTENTIAL IN SUPERCONDUCTORS

被引：22

作者：

MATSUSHITA, T

OTABE, ES

机构：

[1] Department of Computer Science and Electronics, Kyushu Institute of Technology, Iizuka

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1992年 / 31卷 / 1A-B期

关键词：

SUPERCONDUCTOR; FLUX CREEP; WASHBOARD POTENTIAL; PINNING POTENTIAL DEPTH;

D O I：

10.1143/JJAP.31.L33

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Flux creep is theoretically investigated for a model of a sinusoidal washboard potential in superconductors. An apparent pinning potential depth, U0*, defined by the relaxation rate of the shielding current density, is found to be significantly smaller than a given pinning potential depth. In particular, U0* reduces to zero at zero temperature, while the given pinning potential depth takes a finite value. The effect of the form of the potential barrier on such a significant flux creep at low temperatures is discussed.

引用

收藏

页码：L33 / L35

页数：3

相关论文

共 11 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] FLUX CREEP IN TYPE-2 SUPERCONDUCTORS [J].

BEASLEY, MR ;

LABUSCH, R ;

WEBB, WW .

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

[3] INTERACTION DISTANCE BETWEEN FLUX LINES AND PINNING CENTRES [J].

CAMPBELL, AM .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1971, 4 (18) :3186-&

[4] 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

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

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

LARKIN, AI ;

VINOKUR, VM .

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

[6] MAGNETIC-FLUX CREEP AS A PERCOLATION PHENOMENON [J].

GUREVICH, A ;

KUPFER, H ;

KELLER, C .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1991, 4 :S91-S93

[7] 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

[8] FLUX CREEP AND IRREVERSIBILITY LINE IN HIGH-TEMPERATURE OXIDE SUPERCONDUCTORS [J].

MATSUSHITA, T ;

FUJIYOSHI, T ;

TOKO, K ;

YAMAFUJI, K .

APPLIED PHYSICS LETTERS, 1990, 56 (20) :2039-2041

[9] A THEORETICAL COMPARISON OF THE EFFECTS OF THE SHAPE OF THE PINNING POTENTIAL AND A DISTRIBUTION OF PINNING ENERGIES ON THE APPARENT PINNING ENERGY AS MEASURED BY MAGNETIC-FLUX CREEP [J].

WELCH, DO .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (02) :1133-1138

[10]

WELCH DO, 1990, ADV SUPERCONDUCTIVIT, V3, P655