The Normal State Resistivity of Grain Boundaries in YBa2Cu3O7-delta

2003/11/17 by J. H. T. Ransley, S. H. Mennema, K. G. Sandeman +6
Physics and Astronomy · #cond-mat.mtrl-sci #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1063/1.1753055

published as Applied Physics Letters, 84, 4089 (2004). · 11 pages, 3 figures

arxiv created 2003/11/17 · arxiv updated 2009/12/01

Abstract

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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