Spontaneous flux and magnetic-interference patterns in O-pi Josephson junctions

被引：75

作者：

Kirtley, JR

Moler, KA

Scalapino, DJ

机构：

[1] PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544

[2] UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.56.886

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The spontaneous flux generation and magnetic field modulation of the critical current in a 0-pi Josephson junction are calculated for different ratios of the junction length L to the Josephsen penetration depth lambda(J), and different ratios of the 0-junction length to the pi-junction length. These calculations apply to a Pb-YBa2Cu3O7-delta (YBCO) c-axis-oriented junction with one YBCO twin boundary, as well as other experimental systems. Measurements of such a junction can provide information on the nature of the c-axis Josephson coupling and the symmetry of the order parameter in YBCO. We find spontaneous flux even for very short symmetric 0-pi junctions, but asymmetric junctions have qualitatively different behavior.

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页码：886 / 891

页数：6

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