Resistance anomaly near the superconducting transition temperature in short aluminum wires
| Autor: | M. J. Brady, Shalom J. Wind, J. J. Bucchignano, Cheng-Chung Chi, Padmanabhan Santhanam |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Superconductivity
Resistive touchscreen Materials science Condensed matter physics Transition temperature Superconducting wire General Physics and Astronomy engineering.material Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Magnetic field Electrical resistivity and conductivity Tunnel junction Condensed Matter::Superconductivity engineering Anomaly (physics) |
| Zdroj: | Physical Review Letters. 66:2254-2257 |
| ISSN: | 0031-9007 |
| DOI: | 10.1103/physrevlett.66.2254 |
| Popis: | We report a systematic experimental study of the superconducting resistive transition in one-dimensional Al wires of length 0.6 to 110 \ensuremath{\mu}m. Shorter wires show a peak in resistance as a function of temperature near ${\mathit{T}}_{\mathit{c}}$, with a value above the normal-state resistance. Near the peak, the resistance decreases sharply in a magnetic field of only a few Oe. In the same regime, the current-voltage characteristic resembles that of a superconductor-insulator-normal tunnel junction. These new results may be a manifestation of coherent effects in small superconducting samples. |
| Databáze: | OpenAIRE |
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