Flux line lattice melting transition in YBa2Cu3O6.94 observed in specific heat experiments

被引：88

作者：

Roulin, M ^{[1
]}

Junod, A ^{[1
]}

Walker, E ^{[1
]}

机构：

[1] UNIV GENEVA,DEPT PHYS MAT CONDENSEE,CH-1211 GENEVA 4,SWITZERLAND

来源：

SCIENCE | 1996年 / 273卷 / 5279期

关键词：

D O I：

10.1126/science.273.5279.1210

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

When a magnetic field penetrates a type II superconductor, it forms a lattice of thin quantized filaments called magnetic vortices. Resistance, magnetization, and neutron diffraction experiments have shown that the vortex lattice of high-temperature superconductors can melt along a line in the field-temperature plane. The calorimetric signature of melting on this line was observed in a high-accuracy adiabatic specific heat experiment performed on YBa2Cu3O6.94. The specific heat of the vortex liquid was greater than that of the vortex solid.

引用

页码：1210 / 1212

页数：3

共 23 条

[1] 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

[2] 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

[3] Magnetization jumps and irreversibility in Bi2Sr2CaCu2O8 [J].

Farrell, DE ;

Johnston-Halperin, E ;

Klein, L ;

Fournier, P ;

Kapitulnik, A ;

Forgan, EM ;

Rae, AIM ;

Li, TW ;

Trawick, ML ;

Sasik, R ;

Garland, JC .

PHYSICAL REVIEW B, 1996, 53 (17) :11807-11816

[4] THERMAL FLUCTUATIONS, QUENCHED DISORDER, PHASE-TRANSITIONS, AND TRANSPORT IN TYPE-II SUPERCONDUCTORS [J].

FISHER, DS ;

FISHER, MPA ;

HUSE, DA .

PHYSICAL REVIEW B, 1991, 43 (01) :130-159

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

FISHER, MPA .

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

[6] SPECIFIC-HEAT UP TO 14 TESLA AND MAGNETIZATION OF A BI2SR2CACU2O8 SINGLE-CRYSTAL THERMODYNAMICS OF A 2D SUPERCONDUCTOR [J].

JUNOD, A ;

WANG, KQ ;

TSUKAMOTO, T ;

TRISCONE, G ;

REVAZ, B ;

WALKER, E ;

MULLER, J .

PHYSICA C, 1994, 229 (3-4) :209-230

[7]

JUNOD A, 1996, INT C PHYS CHEM MOL

[8] Discontinuity of reversible magnetization in untwinned YBCO single crystals at the first order vortex melting transition [J].

Liang, RX ;

Bonn, DA ;

Hardy, WN .

PHYSICAL REVIEW LETTERS, 1996, 76 (05) :835-838

[9]

MARCENAT C, COMMUNICATION

[10] PROPOSED THERMODYNAMIC METHOD TO DETERMINE THE VORTEX MASS IN LAYERED SUPERCONDUCTORS [J].

MOLER, KA ;

FETTER, AL ;

KAPITULNIK, A .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1995, 100 (3-4) :185-193

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