SUPERCONDUCTING FLUCTUATION EFFECTS IN GRAIN-ALIGNED HGBA2CA2CU3O8+DELTA

被引：10

作者：

BAE, MK

CHOI, MS

LEE, S

LEE, SI

LEE, WC

机构：

[1] RES INST SCI & TECHNOL,DIV PHYS,POHANG 790600,SOUTH KOREA

[2] SOOK MYOUNG WOMENS UNIV,DEPT PHYS,SEOUL 140742,SOUTH KOREA

[3] MOSCOW MV LOMONOSOV STATE UNIV,DEPT CHEM,MOSCOW 119899,RUSSIA

来源：

PHYSICA C | 1994年 / 231卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(94)90629-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have measured the normal state magnetization for grain-aligned HgBa2Ca2Cu3O8+delta with high and low magnetic fields applied perpendicular to the CuO2 planes. The high-field magnetization curves follow the three-dimensional scaling based on the Ginzburg-Landau theory. In addition, we observed significant superconducting fluctuation diamagnetism above T(c) using a low magnetic field, and analyzed it by utilizing the modified Lawrence-Doniach model. Our result demonstrates the dimensional crossover from 3D to 2D as the temperature increases, which is consistent with the scaling result of a high-field limit. From the analysis, we obtained the upper critical field slope, zero-temperature GL coherence length, and mass anisotropy.

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页码：249 / 251

页数：3

相关论文

共 15 条

[1] VORTEX FLUCTUATION OF GRAIN-ALIGNED HGBA2CA2CU3O8+DELTA [J].

BAE, MK ;

CHOI, MS ;

MUN, MO ;

LEE, S ;

LEE, SI ;

LEE, WC .

PHYSICA C, 1994, 228 (1-2) :195-198

[2] EXPERIMENTAL-EVIDENCE FOR A TRANSVERSE MAGNETIZATION OF THE ABRIKOSOV LATTICE IN ANISOTROPIC SUPERCONDUCTORS [J].

FARRELL, DE ;

WILLIAMS, CM ;

WOLF, SA ;

BANSAL, NP ;

KOGAN, VG .

PHYSICAL REVIEW LETTERS, 1988, 61 (24) :2805-2808

[3] EXPERIMENTAL-EVIDENCE OF A DIMENSIONAL CROSSOVER IN Y1BA2CU3O7-SIGMA [J].

FARRELL, DE ;

RICE, JP ;

GINSBERG, DM ;

LIU, JZ .

PHYSICAL REVIEW LETTERS, 1990, 64 (13) :1573-1576

[4] GIANT SUPERCONDUCTING ANISOTROPY IN BI2SR2CA1CU2O8+DELTA [J].

FARRELL, DE ;

BONHAM, S ;

FOSTER, J ;

CHANG, YC ;

JIANG, PZ ;

VANDERVOORT, KG ;

LAM, DJ ;

KOGAN, VG .

PHYSICAL REVIEW LETTERS, 1989, 63 (07) :782-785

[5] GROWTH AND CHARACTERIZATION OF HOMOGENEOUS YBA2CU3O7-DELTA POWDERS PREPARED BY A FREEZE-DRYING METHOD [J].

KIMURA, Y ;

ITO, T ;

YOSHIKAWA, H ;

TACHIWAKI, T ;

HIRAKI, A .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1990, 29 (08) :L1409-L1411

[6] PHENOMENOLOGICAL MODEL OF THE COPPER-OXIDE SUPERCONDUCTORS [J].

KLEMM, RA .

PHYSICAL REVIEW B, 1990, 41 (04) :2073-2097

[7]

KLEMM RA, 1974, THESIS HARVARD U

[8] EFFECTIVE DIMENSIONALITY CHANGE OF FLUCTUATIONS IN SUPERCONDUCTORS IN A MAGNETIC-FIELD [J].

LEE, PA ;

SHENOY, SR .

PHYSICAL REVIEW LETTERS, 1972, 28 (16) :1025-&

[9] SUPERCONDUCTING FLUCTUATION DIAMAGNETISM ABOVE TC IN YBA2CU3O7, LA1.8SR0.2CUO4, AND BI2-XPBXSR2CACU2O8+DELTA [J].

LEE, WC ;

KLEMM, RA ;

JOHNSTON, DC .

PHYSICAL REVIEW LETTERS, 1989, 63 (09) :1012-1015

[10] MAGNETIC-PROPERTIES AND SUPERCONDUCTING-FLUCTUATION DIAMAGNETISM ABOVE TC IN BI2-XPBXSR2CACU2O8+DELTA(X=0.0,0.1,0.2,0.3,0.5) AND BI2-XPBXSR2CA2CU3O10+DELTA(X=0.2,0.25) [J].

LEE, WC ;

CHO, JH ;

JOHNSTON, DC .

PHYSICAL REVIEW B, 1991, 43 (01) :457-462