PINNING CENTERS IN YBA2CU3O7-DELTA FILMS

被引：13

作者：

MANNHART, J ^{[1
]}

ANSELMETTI, D ^{[1
]}

BEDNORZ, JG ^{[1
]}

GERBER, C ^{[1
]}

MULLER, KA ^{[1
]}

SCHLOM, DG ^{[1
]}

机构：

[1] UNIV BASEL, INST PHYS, CH-4056 BASEL, SWITZERLAND

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1992年 / 5卷

关键词：

D O I：

10.1088/0953-2048/5/1S/024

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Pinning centers in epitaxial YBa2Cu3O7-delta films have been investigated by scanning tunneling microscopy and transport studies. An astonishing surface morphology has been found which includes a high density congruent-to 10(9) cm-2 of screw dislocations and nanometer-sized holes. The density of screw dislocations can be controlled by varying the growth conditions of the YBa2Cu3O7-delta films, allowing correlations between critical currents and screw dislocation density to be investigated. Films with higher screw dislocation densities are observed to have higher critical current densities and a slower drop of J(c)(H).

引用

页码：S125 / S128

页数：4

共 10 条

[1]

CHAUDHARI P, 1989, EARLIER RECENT ASPEC, P201

[2] SCREW DISLOCATIONS IN HIGH-TC FILMS [J].

GERBER, C ;

ANSELMETTI, D ;

BEDNORZ, JG ;

MANNHART, J ;

SCHLOM, DG .

NATURE, 1991, 350 (6316) :279-280

[3] DISTRIBUTION OF ACTIVATION-ENERGIES FOR THERMALLY ACTIVATED FLUX MOTION IN HIGH-TC SUPERCONDUCTORS - AN INVERSION SCHEME [J].

HAGEN, CW ;

GRIESSEN, R .

PHYSICAL REVIEW LETTERS, 1989, 62 (24) :2857-2860

[4] GROWTH-MECHANISM OF SPUTTERED FILMS OF YBA2CU3O7 STUDIED BY SCANNING TUNNELING MICROSCOPY [J].

HAWLEY, M ;

RAISTRICK, ID ;

BEERY, JG ;

HOULTON, RJ .

SCIENCE, 1991, 251 (5001) :1587-1589

[5]

LANG HP, IN PRESS EUROPHYS LE

[6]

PAN VM, ELECTROSTATIC MECHAN

[7] ANISOTROPY OF THE CRITICAL CURRENT-DENSITY IN EPITAXIAL YBA2CU3OX FILMS [J].

ROAS, B ;

SCHULTZ, L ;

SAEMANNISCHENKO, G .

PHYSICAL REVIEW LETTERS, 1990, 64 (04) :479-482

[8]

SCHLOM DG, IN PRESS Z PHYS B

[9] MICROSTRUCTURE OF ULTRATHIN FILMS OF YBA2CU3O7-DELTA ON MGO [J].

STREIFFER, SK ;

LAIRSON, BM ;

EOM, CB ;

CLEMENS, BM ;

BRAVMAN, JC ;

GEBALLE, TH .

PHYSICAL REVIEW B, 1991, 43 (16) :13007-13018

[10] CRITICAL CURRENT BEHAVIOR IN NARROW YBA2CU3 O7-DELTA THIN-FILMS [J].

TAHARA, S ;

ANLAGE, SM ;

EOM, CB ;

FORK, DK ;

GEBALLE, TH ;

BEASLEY, MR .

PHYSICA C, 1989, 162 :1175-1176

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