14 citations · 31 across the 4 of their papers we have counts for
4 papers
Normal state properties of high angle grain boundaries in (Y,Ca)Ba2Cu3O7-delta
S. H. Mennema, J. H. T. Ransley, G. Burnell +3
By lithographically fabricating an optimised Wheatstone bridge geometry, we have been able to make accurate measurements of the resistance of grain boundaries in Y1-xCaxBa2Cu3O7-d…
The Normal State Resistivity of Grain Boundaries in YBa2Cu3O7-delta
J. H. T. Ransley, S. H. Mennema, K. G. Sandeman +6
Using an optimized bridge geometry we have been able to make accurate measurements of the properties of YBa2Cu3O7-delta grain boundaries above Tc. The results show a strong depende…
Direct Observation of a Temperature Dependent 0-pi Junction Transition in a Mesoscopic High Critical Temperature Grain Boundary Junction
G. Testa, A. Monaco, E. Esposito +5
We have observed, for the first time, a temperature dependent 0-pi junction crossover in a 45 symmetric [001] tilt grain boundary junction. Experimental data, obtained by a double…
Flux line lattice structure and behaviour in anti-phase boundary free vicinal YBa2Cu3O7-d thin films
J. H. Durrell, S. H. Mennema, Ch. Jooss +4
Field angle dependent critical current, magneto-optical microscopy, and high resolution electron microscopy studies have been performed on YBa2Cu3O7-d thin films grown on mis-cut s…