Asymmetric Magnetic Interference Patterns in 0- π Josephson Junctions

D. F. Agterberg; M. Sigrist

doi:10.1103/PhysRevLett.80.2689

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Asymmetric Magnetic Interference Patterns in 0- π Josephson Junctions

D. F. Agterberg, M. Sigrist

DOI 10.1103/PhysRevLett.80.2689 · Physical Review Letters

T1

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Abstract

We examine the magnetic interference patterns of Josephson junctions with a region of 0 and of π phase shift. Such junctions have recently been realized as c-axis YBCO-Pb junctions with a single twin boundary in YBCO. We show that in general the junction generates self-fields which introduces an asymmetry in the critical current under reversal of the magnetic field. Numerical calculations of these asymmetries indicate that they account well for unexplained features observed in single twin boundary junctions.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 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