Andreev reflections from La2?xSrxCuO4 single crystals
| Autor: | N. S. Achsaf, D. Goldschmidt, A. Revcolevschi, Guy Deutscher, A. Vietkine |
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| Rok vydání: | 1996 |
| Předmět: |
Physics
Materials science Condensed matter physics Isotropy Energy Engineering and Power Technology Conductance Function (mathematics) Condensed Matter Physics Atomic and Molecular Physics and Optics Symmetry (physics) Electronic Optical and Magnetic Materials Andreev reflection Maxima and minima Electrical resistivity and conductivity Condensed Matter::Superconductivity Point (geometry) General Materials Science Electrical and Electronic Engineering Anisotropy |
| Zdroj: | Journal of Low Temperature Physics. 105:329-334 |
| ISSN: | 1573-7357 0022-2291 |
| DOI: | 10.1007/bf00768407 |
| Popis: | Andreev reflections have been studied at the interface between a gold tip and La2−xSrxCuO4 (x=0.11,0.12) single crystals, along the (110) direction. The shape of the I(V) characteristic has been analyzed within the framework of the theory of Tanaka and Kashiwaya, allowing for an anisotropic order parameter. The data cannot be fitted either to a pure isotropic s-wave or pure d-wave symmetry. The best fit is obtained for an anisotropic gap, with Δmax=15 meV and Δmin=5 meV. |
| Databáze: | OpenAIRE |
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