Plasmon excitations in Josephson arrays and thin superconducting layers
- 30 April 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 64 (18) , 2199-2201
- https://doi.org/10.1103/physrevlett.64.2199
Abstract
Long-wave excitations in Josephson arrays are investigated. The existence of excitations with square root or acoustic dispersion law, like plasmons in two-dimensional electron gas, is predicted. Observation of such excitations with frequency much lower than the frequency of the superconducting gap Δ/ħ is possible by use of a grating and the same far infrared or microwave techniques used for detection of the plasmons in semiconductor microstructures.Keywords
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