Microwave Enhancement of Superconductivity in Aluminum Tunnel Junctions
| Autor: | Robert J. Soulen, Louis B. Holdeman, James T. Hall |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Superconductivity
Tunnel effect Materials science Condensed matter physics Band gap Condensed Matter::Superconductivity Transition temperature General Physics and Astronomy Astrophysics::Cosmology and Extragalactic Astrophysics Substrate (electronics) Electromagnetic radiation Quantum tunnelling Microwave |
| Zdroj: | Physical Review Letters. 45:1011-1014 |
| ISSN: | 0031-9007 |
| DOI: | 10.1103/physrevlett.45.1011 |
| Popis: | Microwave radiation (0.1 to 12 GHz) was propagated in a microstrip transmission line formed by a superconducting Al film on a BaF/sub 2/ substrate. Cross strips formed Al--Al oxide--Al tunnel junctions that were used to study the effect of microwaves on the superconducting properties of the Al films. Large increases in the energy gap and transition temperature were observed for frequencies near 3.7 GHz. The enhancements were negligible below 1 GHz. Anomalous behavior of the features in the tunneling characteristics was observed above 5 GHz. |
| Databáze: | OpenAIRE |
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