Spontaneous flux and magnetic-interference patterns in 0-{pi} Josephson junctions

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.886· OSTI ID:531835

Kirtley, J R ^[1]; Moler, K A ^[2]; Scalapino, D J ^[3]

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1. IBM T. J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (United States)
2. Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States)
3. Department of Physics, University of California, Santa Barbara, California 93106 (United States)

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}{sub J}, and different ratios of the 0-junction length to the {pi}-junction length. These calculations apply to a Pb-YBa{sub 2}Cu{sub 3}O{sub 7{minus}{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. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 531835
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 2 Vol. 56; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
BARIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
HIGH-TC SUPERCONDUCTORS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
LEAD
MAGNETIC FLUX
TYPE-II SUPERCONDUCTORS
YTTRIUM OXIDES