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- Title
Nonlinear Dynamics of a Hybrid Josephson Heterostructure with Cuprate Antiferromagnetic Interlayer.
- Authors
Constantinian, K. Y.; Ovsyannikov, G. A.; Shadrin, A. V.; Kislinsky, Yu. V.
- Abstract
The nonstationary Josephson effect in a hybrid heterostructure based on the YBa2Cu3O7–δ cuprate superconductor and cuprate antiferromagnetic barrier interlayer Ca0.5Sr0.5CuO2 and with the upper superconducting electrode Au/Nb is experimentally investigated. At the frequency of external exposure f = 70 GHz, close to the plasma frequency of the Josephson junction, a giant increase in the noise signal was detected, which was explained by the appearance of stochastic oscillations on the heterostructure. Stochastic oscillations, but with less intensity, occur at the frequency f = 45 GHz. At the same time, on the current–voltage characteristics, there are intervals with negative dynamic resistance.
- Subjects
CUPRATES; HIGH temperature superconductors; JOSEPHSON junctions; JOSEPHSON effect; COPPER electrodes; CURRENT-voltage characteristics; PLASMA frequencies
- Publication
Journal of Communications Technology & Electronics, 2019, Vol 64, Issue 10, p1108
- ISSN
1064-2269
- Publication type
Article
- DOI
10.1134/S1064226919090134