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Resistivity of YBCO as a function of temperature measured along film plane. Arrow marks the superconducting transition.
Current-voltage characteristics of YBCO/STON measured at selected temperatures below by tuning bias voltage. Electrode setting for the measurement is schematically shown in the inset.
Zero-bias junction resistance as a function of temperature. Solid lines are guides for the eye.
Temperature-dependent diffusion voltage of YBCO/STON. Inset plot shows the differences between the observed (symbols) and the expected (dashed curve) diffusion voltages. Solid lines are guides for the eye.
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