d-wave-induced Josephson current counterflow in YBa2Cu3O7/Nb zigzag junctions -: art. no. 057004

被引：109

作者：

Smilde, HJH

Ariando

Blank, DHA

Gerritsma, GJ

Hilgenkamp, H

Rogalla, H

机构：

[1] Univ Twente, Dept Appl Phys, Low Temp Div, NL-7500 AE Enschede, Netherlands

[2] Univ Twente, MESA Res Inst, NL-7500 AE Enschede, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.88.057004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Well-defined zigzag-shaped ramp-type Josephson junctions between YBa2Cu3O7 and Nb have been studied. The magnetic field dependencies of the critical currents provide evidence for d-wave-induced alternations in the direction of the Josephson current between neighboring sides of the zigzag structure. The arrays present controllable model systems to study the influences of pi facets in high-angle high-T-c grain boundaries. From the characteristics, we estimate a possible imaginary s-wave admixture to the order parameter of the YBa2Cu3O7 to be below 1%.

引用

收藏

页码：4 / 570044

页数：4

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