MECHANISM OF THE LORENTZ-FORCE-INDEPENDENT DISSIPATION IN BI2SR2CACU2OY

被引：37

作者：

ANDO, Y

MOTOHIRA, N

KITAZAWA, K

TAKEYA, JI

AKITA, S

机构：

[1] UNIV TOKYO, DEPT IND CHEM, BUNKYO KU, TOKYO 113, JAPAN

[2] ELECT POWER IND, CENT RES INST, KOMAE, TOKYO 201, JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.67.2737

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel power law was found above 65 K in the I-V characteristics of Bi2Sr2CaCu2Oy single crystals with the magnetic field perpendicular to the c axis. At 80 K, the power-law exponent decreased sharply up to 1.5 T but remained nearly constant above it, suggesting an abrupt crossover to a different mechanism. An unusual field dependence of resistivity was also found, which cannot be explained by simple flux-flow theory. The above novel features of the Lorentz-force-independent dissipation can be consistently explained by a model based on two-dimensional vortex-antivortex pair breaking.

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页码：2737 / 2740

页数：4

相关论文

共 23 条

[1] VORTEX MOTION AND KOSTERLITZ-THOULESS TRANSITION IN SUPERCONDUCTING SINGLE-CRYSTALS BI2SR2CACU2OX [J].

ARTEMENKO, SN ;

GORLOVA, IG ;

LATYSHEV, YI .

PHYSICS LETTERS A, 1989, 138 (08) :428-434

[2] POWER LAWS IN THE RESISTIVE STATE IN HIGH-TC SUPERCONDUCTORS [J].

BAN, M ;

ICHIGUCHI, T ;

ONOGI, T .

PHYSICAL REVIEW B, 1989, 40 (07) :4419-4422

[3] THEORY OF MOTION OF VORTICES IN SUPERCONDUCTORS [J].

BARDEEN, J ;

STEPHEN, MJ .

PHYSICAL REVIEW, 1965, 140 (4A) :1197-+

[4] KOSTERLITZ-THOULESS TRANSITION IN THE SMECTIC VORTEX STATE OF A LAYERED SUPERCONDUCTOR [J].

BLATTER, G ;

IVLEV, BI ;

RHYNER, J .

PHYSICAL REVIEW LETTERS, 1991, 66 (18) :2392-2395

[5] FIELD-INDUCED BROADENING OF THE RESISTIVE TRANSITION AND 2-DIMENSIONAL NATURE OF FLUX PINNING IN Y2BA4CU8O16 FILMS [J].

BUDHANI, RC ;

WELCH, DO ;

SUENAGA, M ;

SABATINI, RL .

PHYSICAL REVIEW LETTERS, 1990, 64 (14) :1666-1669

[6] RESISTIVITY OF HIGH-TEMPERATURE SUPERCONDUCTORS - IS THE VORTEX STATE A LIQUID [J].

CHAKRAVARTY, S ;

IVLEV, BI ;

OVCHINNIKOV, YN .

PHYSICAL REVIEW LETTERS, 1990, 64 (26) :3187-3190

[7] SQUID PICOVOLTOMETRY OF YBA2CU3O7 SINGLE-CRYSTALS - EVIDENCE FOR A FINITE-TEMPERATURE PHASE-TRANSITION IN THE HIGH-FIELD VORTEX STATE [J].

GAMMEL, PL ;

SCHNEEMEYER, LF ;

BISHOP, DJ .

PHYSICAL REVIEW LETTERS, 1991, 66 (07) :953-956

[8] RESISTIVE BEHAVIOR OF HIGH-TC SUPERCONDUCTORS - INFLUENCE OF A DISTRIBUTION OF ACTIVATION-ENERGIES [J].

GRIESSEN, R .

PHYSICAL REVIEW LETTERS, 1990, 64 (14) :1674-1677

[9] FLUX FLOW IN LAYERED HIGH-TC SUPERCONDUCTORS [J].

IVLEV, BI ;

KOPNIN, NB .

PHYSICAL REVIEW B, 1990, 42 (16) :10052-10059

[10] ABSENCE OF CURRENT DIRECTION DEPENDENCE OF THE RESISTIVE STATE OF HIGH-TEMPERATURE SUPERCONDUCTORS IN MAGNETIC-FIELDS [J].

IYE, Y ;

NAKAMURA, S ;

TAMEGAI, T .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1989, 159 (04) :433-438