Spontaneous flux and magnetic-interference patterns in 0-π Josephson junctions

J. R. Kirtley; K. A. Moler; D. J. Scalapino

doi:10.1103/PhysRevB.56.886

← Back to search

Spontaneous flux and magnetic-interference patterns in 0-π Josephson junctions

J. R. Kirtley, K. A. Moler, D. J. Scalapino

DOI 10.1103/PhysRevB.56.886 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

The spontaneous flux generation and magnetic field modulation of the critical current in a 0-π Josephson junction are calculated for different ratios of the junction length L to the Josephsen penetration depth λJ, and different ratios of the 0-junction length to the π-junction length. These calculations apply to a Pb-YBa2Cu3O7−δ (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-π junctions, but asymmetric junctions have qualitatively different behavior.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown