Microwave emission from two-stacked arrays of long Josephson junctions
Autor: | Giovanni Carapella, N.H. Rasmussen, R. Latempa, J. Mygind, Giovanni Costabile |
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Rok vydání: | 2001 |
Předmět: |
Physics
Josephson effect Condensed matter physics Fluxon business.industry Infrasound London penetration depth Condensed Matter Physics Magnetic flux Electronic Optical and Magnetic Materials Optics Condensed Matter::Superconductivity Coherent states Electrical and Electronic Engineering business Noise (radio) Long Josephson junction |
Zdroj: | IEEE Transactions on Appiled Superconductivity. 11:1203-1206 |
ISSN: | 1051-8223 |
Popis: | We have recorded the radiation generated by magnetic flux quanta oscillations and by cavity mode oscillations in two-stacked arrays each consisting of five long Josephson junctions biased in parallel. The two arrays have in common the middle electrode, which is thinner than the London penetration depth, and can be biased independently. Basically, two kind of fluxon states can be generated, one consisting of a row of five fluxons oscillating in one of the arrays, the other consisting of a row of five fluxons in one array and five antifluxons in the other array, bound in a coherent state. It is found from the microwave emission that the latter configuration is less sensitive to low-frequency noise. |
Databáze: | OpenAIRE |
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