Phase dependence of the Josephson current in inhomogeneous high-Tc grain-boundary junctions

E. Il’ichev; V. Zakosarenko; R. P. J. IJsselsteijn; H. E. Hoenig; H.-G. Meyer; M. V. Fistul; P. Müller

doi:10.1103/PhysRevB.59.11502

← Back to search

Phase dependence of the Josephson current in inhomogeneous high-Tc grain-boundary junctions

E. Il’ichev, V. Zakosarenko, R. P. J. IJsselsteijn, H. E. Hoenig, H.-G. Meyer, M. V. Fistul, P. Müller

DOI 10.1103/PhysRevB.59.11502 · 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

We present an experimental and theoretical study of the current-phase relation Is(φ) for 45° grain boundaries in YBa2Cu3O7−x films. A model of strongly inhomogeneous Josephson junctions, in which the presence of randomly alternating current leads to a deviation of Is(φ) from the well-known sin(φ) dependence, has been used. This deviation decreases with the temperature T and is described by the formula Is(φ)=Ic(T)(sinφ+γ(T)sin2φ). Using the developed model, the coefficient γ is calculated and its temperature dependence is found to be in good agreement with experiment.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	89	Pressure unresolved	onset