The zero-bias. conductance peak that is often found in the tunneling characteristics of high-temperature-superconductor (HTS) junctions is analyzed in the framework of the Anderson-Appelbaum model for electron magnetic interaction. We have found that when the anomaly develops at T > T(c), its temperature behavior is determined by the superconducting properties of the HTS, while, when it develops at T < T(c), the presence of normal or semiconducting surface regions can be supposed. A giant resistance peak seems to indicate interdiffusion of the counterelectrode into the base material.

ZERO-BIAS ANOMALIES IN HIGH-TC-SUPERCONDUCTOR TUNNEL-JUNCTIONS

CUCOLO, Anna Maria;DI LEO, Rosario
1993-01-01

Abstract

The zero-bias. conductance peak that is often found in the tunneling characteristics of high-temperature-superconductor (HTS) junctions is analyzed in the framework of the Anderson-Appelbaum model for electron magnetic interaction. We have found that when the anomaly develops at T > T(c), its temperature behavior is determined by the superconducting properties of the HTS, while, when it develops at T < T(c), the presence of normal or semiconducting surface regions can be supposed. A giant resistance peak seems to indicate interdiffusion of the counterelectrode into the base material.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/3813884
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