The Normal State Resistivity of Grain Boundaries in YBa2Cu3O7-delta

Ransley, J. H. T.; Mennema, S. H.; Sandeman, K. G.; Burnell, G.; Kye, J. I.; Oh, B.; Tarte, E. J.; Evetts, J. E.; Blamire, M. G.

doi:10.1063/1.1753055

arXiv 2003-11-17 DOI 10.1063/1.1753055 0 views

The Normal State Resistivity of Grain Boundaries in YBa2Cu3O7-delta

Ransley, J. H. T. · Mennema, S. H. · Sandeman, K. G. · Burnell, G. · Kye, J. I. · Oh, B. · Tarte, E. J. · Evetts, J. E. · Blamire, M. G.

Materials Science Strongly Correlated Electrons Superconductivity

Original · EN

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 dependence of the change of resistance with temperature on grain boundary angle. Analysis of our results in the context of band-bending allows us to estimate the height of the potential barrier present at the grain boundary interface.

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