EVIDENCE SUGGESTING SUPERCONDUCTIVITY AT 250-K IN A SEQUENTIALLY DEPOSITED CUPRATE FILM

被引：67

作者：

LAGUES, M ^{[1
]}

XIE, XM ^{[1
]}

TEBBJI, H ^{[1
]}

XU, XZ ^{[1
]}

MAIRET, V ^{[1
]}

HATTERER, C ^{[1
]}

BEURAN, CF ^{[1
]}

DEVILLECAVELLIN, C ^{[1
]}

机构：

[1] UNIV PARIS 12,ELECTR LAB,F-94010 CRETEIL,FRANCE

来源：

SCIENCE | 1993年 / 262卷 / 5141期

关键词：

D O I：

10.1126/science.262.5141.1850

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：

An artificial cuprate compound belonging to the BiSrCaCuO family with eight adjacent CuO2 layers in each building block was deposited on a single crystal of SrTiO3 by sequentially imposed layer epitaxy. This compound undergoes a five order of magnitude resistivity drop with an onset near 280 kelvin and an offset at 250 kelvin. It exhibits a diamagnetic variation of susceptibility and magnetization below 290 kelvin. Additional observed features, such as strongly nonlinear conductivity, suggests superconductivity as a plausible explanation of the properties of this compound.

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页码：1850 / 1852

页数：3

相关论文

共 33 条

[1] SUPERCONDUCTING (SR,ND)CUOY THIN-FILMS WITH INFINITE-LAYER STRUCTURE [J].

ADACHI, H ;

SATOH, T ;

ICHIKAWA, Y ;

SETSUNE, K ;

WASA, K .

PHYSICA C, 1992, 196 (1-2) :14-16

[2]

ADACHI H, 1988, NATURE, V27, pL1883

[3] SUPERCONDUCTIVITY AT 110-K IN THE INFINITE-LAYER COMPOUND (SR1-XCAX)1-YCUO2 [J].

AZUMA, M ;

HIROI, Z ;

TAKANO, M ;

BANDO, Y ;

TAKEDA, Y .

NATURE, 1992, 356 (6372) :775-776

[4] LAYER-BY-LAYER DEPOSITION OF LA1.85SR0.15CUOX FILMS BY PULSED LASER ABLATION [J].

CHERN, MY ;

GUPTA, A ;

HUSSEY, BW .

APPLIED PHYSICS LETTERS, 1992, 60 (24) :3045-3047

[5] HREM STUDY OF THE DEFECTS IN THE ORTHORHOMBIC SUPERCONDUCTOR YBA2CU3O7 +/-EPSILON .2. OXYGEN SUBSTOICHIOMETRY AND CATIONIC DISORDER [J].

DOMENGES, B ;

HERVIEU, M ;

MICHEL, C ;

RAVEAU, B .

EUROPHYSICS LETTERS, 1987, 4 (02) :211-214

[6] SUPERCONDUCTIVITY IN THE INFINITE-LAYER COMPOUND SR1-XLAXCUO2 PREPARED UNDER HIGH-PRESSURE [J].

ER, G ;

MIYAMOTO, Y ;

KANAMARU, F ;

KIKKAWA, S .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1991, 181 (1-3) :206-208

[7] INSITU EPITAXIAL-GROWTH OF BI2(SR,CA)3CU2OX FILMS BY ION-BEAM SPUTTERING WITH AN ATOMIC OXYGEN SOURCE [J].

FUJITA, J ;

YOSHITAKE, T ;

IGARASHI, H ;

SATOH, T .

APPLIED PHYSICS LETTERS, 1990, 56 (03) :295-297

[8]

GAO LY, UNPUB

[9] STRUCTURE AND SUPERCONDUCTIVITY OF THE INFINITE-LAYER COMPOUND (CA1-YSRY)1-XCUO2-Z [J].

HIROI, Z ;

AZUMA, M ;

TAKANO, M ;

TAKEDA, Y .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1993, 208 (3-4) :286-296

[10] A NEW FAMILY OF COPPER-OXIDE SUPERCONDUCTORS SRN+1CUNO2N+1+DELTA STABILIZED AT HIGH-PRESSURE [J].

HIROI, Z ;

TAKANO, M ;

AZUMA, M ;

TAKEDA, Y .

NATURE, 1993, 364 (6435) :315-317

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