Coincidence of vortex-lattice melting and loss of vortex correlation along the c direction in untwinned YBa2Cu3O7-delta single crystals

被引：88

作者：

Lopez, D ^{[1
]}

Righi, EF ^{[1
]}

Nieva, G ^{[1
]}

delaCruz, F ^{[1
]}

机构：

[1] COMIS NACL ENERGIA ATOM,INST BALSEIRO,RA-8400 SAN CARLOS BARILO,RIO NEGRO,ARGENTINA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.76.4034

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on transport measurements using the de flux transformer configuration in clean and twinned single crystals of YBa2Cu3O7-delta. We show that correlated disorder changes not only the order of the solid-liquid phase transition but also the nature of the vortices in the liquid state. In clean crystals, melting is shown to take place between a solid of vortex lines and a liquid with no correlation in the direction of the magnetic field.

引用

页码：4034 / 4037

页数：4

共 37 条

[1] FLUX-LINE CROSSING IN THE VORTEX-LIQUID PHASE OF YBA2CU3O7-DELTA [J].

BARFORD, W .

PHYSICAL REVIEW B, 1995, 51 (18) :12908-12910

[2] MAGNETIC FLUX-LINE LATTICES AND VORTICES IN THE COPPER-OXIDE SUPERCONDUCTORS [J].

BISHOP, DJ ;

GAMMEL, PL ;

HUSE, DA ;

MURRAY, CA .

SCIENCE, 1992, 255 (5041) :165-172

[3] VORTICES IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

BLATTER, G ;

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

LARKIN, AI ;

VINOKUR, VM .

REVIEWS OF MODERN PHYSICS, 1994, 66 (04) :1125-1388

[4] LONGITUDINAL SUPERCONDUCTIVITY IN VORTEX-LINE PHASES - A MONTE-CARLO STUDY [J].

CARNEIRO, G .

PHYSICAL REVIEW LETTERS, 1995, 75 (03) :521-524

[5] BARRIERS TO VORTEX-LINE CUTTING IN HIGH-T-C SUPERCONDUCTORS [J].

CARRARO, C ;

FISHER, DS .

PHYSICAL REVIEW B, 1995, 51 (01) :534-538

[6] SUPERCONDUCTING COHERENCE IN A VORTEX LINE LIQUID - SIMULATIONS WITH FINITE-LAMBDA [J].

CHEN, T ;

TEITEL, S .

PHYSICAL REVIEW LETTERS, 1995, 74 (14) :2792-2795

[7] HELICITY MODULUS AND MEISSNER EFFECT IN A FLUCTUATING TYPE-II SUPERCONDUCTOR [J].

CHEN, T ;

TEITEL, S .

PHYSICAL REVIEW LETTERS, 1994, 72 (13) :2085-2088

[8] DIRECT OBSERVATION OF MAGNETIC-FLUX LATTICE MELTING AND DECOMPOSITION IN THE HIGH-T(C) SUPERCONDUCTOR BI2.15SR1.95CACU2O8+X [J].

CUBITT, R ;

FORGAN, EM ;

YANG, G ;

LEE, SL ;

PAUL, DM ;

MOOK, HA ;

YETHIRAJ, M ;

KES, PH ;

LI, TW ;

MENOVSKY, AA ;

TARNAWSKI, Z ;

MORTENSEN, K .

NATURE, 1993, 365 (6445) :407-411

[9] THERMALLY-INDUCED CHANGE IN THE VORTEX DIMENSIONALITY OF YBA2CU3O7 SINGLE-CRYSTALS [J].

DELACRUZ, F ;

LOPEZ, D ;

NIEVA, G .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1994, 70 (03) :773-786

[10]

DOMINGUEZ D, UNPUB

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