Abstract
The Josephson properties of 90° basal-plane-faced tilt boundaries formed between c-axis and a-axis normal grains in YBa2Cu3O7−δ thin films are reported. These boundaries have a low conductance which results in underdamped junction behavior. The junction capacitance and kinetic inductance both scale directly with junction critical current and conductance. The results emphasize the inhomogeneous and filamentary nature of the superconducting properties of cuprate grain boundaries.
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