Direct evidence for tailorable flux-pinning force and its anisotropy in RBa2Cu3O7-δ multilayers -: art. no. 212501

被引：30

作者：

Cai, C ^{[1
]}

Holzapfel, B ^{[1
]}

Hänisch, J ^{[1
]}

Schultz, L ^{[1
]}

机构：

[1] Leibniz Inst Solid State & Mat Res IFW, D-01171 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.70.212501

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By studying angular dependences of the transport critical current density (J(c)), we demonstrate that the strongest controllable improvement of flux pinning takes place at Hparallel toc, while the highest J(c) occurs at Hperpendicular toc for the artificial multilayers consisting of three RBa2Cu3O7-delta (R=Gd, Nd, and Eu) superconductors. It is found that the flux pinning and its anisotropy are tailored mainly due to the collective pinning behavior of noncorrelated, out-of-plane structural disorders. The field dependence of flux-pinning anisotropy is revealed to be nonmonotonic, and governed by two characteristic fields, i.e., irreversibility and accommodation fields.

引用

页码：1 / 4

页数：4

共 13 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] Superconductivity suppression and flux-pinning crossover in artificial multilayers of ternary RBa2Cu3O7-δ (R=Gd, Nd, and Eu) -: art. no. 064504 [J].

Cai, C ;

Holzapfel, B ;

Hänisch, J ;

Schultz, L .

PHYSICAL REVIEW B, 2004, 70 (06) :064504-1

[3] Magnetotransport and flux pinning characteristics in RBa2Cu3O7-δ (R=Gd,Eu,Nd) and (Gd1/3Eu1/3Nd1/3)Ba2Cu3O7-δ high-Tc superconducting thin films on SrTiO3(100) -: art. no. 104531 [J].

Cai, C ;

Holzapfel, B ;

Hänisch, J ;

Fernández, L ;

Schultz, L .

PHYSICAL REVIEW B, 2004, 69 (10)

[4] Origin of high critical currents in YBa2Cu3O7-δ superconducting thin films [J].

Dam, B ;

Huijbregtse, JM ;

Klaassen, FC ;

van der Geest, RCF ;

Doornbos, G ;

Rector, JH ;

Testa, AM ;

Freisem, S ;

Martinez, JC ;

Stäuble-Pümpin, B ;

Griessen, R .

NATURE, 1999, 399 (6735) :439-442

[5] Influence of the grain boundary network on the critical current of YBa2Cu3O7 films grown on biaxially textured metallic substrates -: art. no. 052503 [J].

Fernández, L ;

Holzapfel, B ;

Schindler, F ;

de Boer, B ;

Attenberger, A ;

Hänisch, J ;

Schultz, L .

PHYSICAL REVIEW B, 2003, 67 (05)

[6] Accommodation of vortices to columnar defects: Evidence for large entropic reduction of vortex localization [J].

KrusinElbaum, L ;

Civale, L ;

Thompson, JR ;

Feild, C .

PHYSICAL REVIEW B, 1996, 53 (17) :11744-11750

[7] High-Tc superconducting materials for electric power applications [J].

Larbalestier, D ;

Gurevich, A ;

Feldmann, DM ;

Polyanskii, A .

NATURE, 2001, 414 (6861) :368-377

[8] Strongly enhanced current densities in superconducting coated conductors of YBa2Cu3O7-x+BaZrO3 [J].

Macmanus-Driscoll, JL ;

Foltyn, SR ;

Jia, QX ;

Wang, H ;

Serquis, A ;

Civale, L ;

Maiorov, B ;

Hawley, ME ;

Maley, MP ;

Peterson, DE .

NATURE MATERIALS, 2004, 3 (07) :439-443

[9] Vortex matter in superconductors [J].

Pan, VM ;

Pan, AV .

LOW TEMPERATURE PHYSICS, 2001, 27 (9-10) :732-746

[10] Angular regimes of ac dynamics and pinning in YBa2Cu3O7 crystals with and without columnar defects -: art. no. 214517 [J].

Pasquini, G ;

Civale, L ;

Lanza, H ;

Nieva, G .

PHYSICAL REVIEW B, 2002, 65 (21) :2145171-2145178

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