Zero-bias conductance and energy gap measurements in junctions
| Autor: | M. S. Hegde, Rajiv K. Singh, K. M. Satyalakshmi, C. B. Lee, D. Kumar, R. Pinto, P. R. Apte |
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| Rok vydání: | 1998 |
| Předmět: |
Superconductivity
Materials science High-temperature superconductivity Condensed matter physics Band gap Metals and Alloys Conductance Condensed Matter Physics Spectral line Pulsed laser deposition law.invention Electrical resistivity and conductivity law Condensed Matter::Superconductivity Materials Chemistry Ceramics and Composites Electrical and Electronic Engineering Thin film |
| Zdroj: | Superconductor Science and Technology. 11:766-769 |
| ISSN: | 1361-6668 0953-2048 |
| DOI: | 10.1088/0953-2048/11/8/009 |
| Popis: | Conductance measurements of junctions between a high- superconductor and a metallic oxide have been carried out along the a-b plane to examine the tunnel-junction spectra. For these measurements, in situ films have been grown on c-axis oriented thin films using the pulsed laser deposition technique. Two distinctive energy gaps have been observed along with conductance peaks around zero bias. The analysis of zero-bias conductance and energy gap data suggests the presence of midgap states located at the centre of a finite energy gap. The results obtained are also in accordance with the d-wave nature of high- superconductors. |
| Databáze: | OpenAIRE |
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