Zero bias anomalies in YBa$_2$Cu$_3$O$_7$ tunnel junctions
| Autor: | A. Inam, W. L. Feldmann, Laura Greene, Jerome Lesueur |
|---|---|
| Přispěvatelé: | Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) |
| Jazyk: | angličtina |
| Rok vydání: | 1992 |
| Předmět: |
High-temperature superconductivity
Materials science Condensed matter physics Scattering Energy Engineering and Power Technology 02 engineering and technology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials law.invention Magnetic field Tunnel effect law Electrical resistivity and conductivity Condensed Matter::Superconductivity 0103 physical sciences Superconducting tunnel junction Condensed Matter::Strongly Correlated Electrons Kondo effect Electrical and Electronic Engineering Thin film 010306 general physics 0210 nano-technology |
| Zdroj: | Physica C: Superconductivity and its Applications Physica C: Superconductivity and its Applications, Elsevier, 1992, 191, pp.325-332 |
| ISSN: | 0921-4534 |
| Popis: | Reproducible planar tunnel junctions based on high-quality YBa 2 Cu 3 O 7 thin films are studied as a junction of crystallographic orientation. Using Pb as a counter-electrode, all junctions exhibit zero bias anomalies, the sign of which depends upon the crystallographic orientation of the film. For c -axis, or (001) films, in which the CuO 2 planes are parallel to the junction surface, a 5 mV wide dip in the tunneling conductance, which is independent of applied magnetic field up to 5 T, is observed. Conversely, for the (103) and (100) orientations, in which the CuO 2 plane points toward the junction surface, a peak in the tunneling conductance, which is strongly magnetic-field dependent, is observed. Analysis is performed in terms of spin-flip and Kondo-type scattering at the interface (Anderson and Applebaum theory). |
| Databáze: | OpenAIRE |
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