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This article is cited in 5 scientific papers (total in 5 papers)
CONDENSED MATTER
Staircase structure of Shapiro steps
Yu. M. Shukrinovab, I. R. Rahmonovbc, M. Nashaatdb a Dubna International University for Nature, Society and Man, 141982 Dubna, Russia
b Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia
c Umarov Physical and Technical Institute, 734063 Dushanbe, Tajikistan
d Department of Physics, Cairo University, 12613 Cairo, Egypt
Abstract:
We investigate $IV$-characteristics of coupled Josephson junctions which model the intrinsic Josephson junctions in high temperature superconductors under external electromagnetic radiation. A staircase structure of Shapiro steps is found in the branching region. Its origin is related to the coupling between junctions and their switching from rotating to oscillating states. This conclusion are tested by detailed analysis of the $IV$-characteristics as for total stack and for each junction in the stack. $IV$-curves of junctions in the stack are compared with the average of time derivative of phase difference. Experimental observation of this staircase structure would give us a prove of coupling between junctions and a way for precise measurement of its value. Such investigations would be also useful for a diagnostic of Josephson junctions in the stack.
Received: 10.10.2015
Citation:
Yu. M. Shukrinov, I. R. Rahmonov, M. Nashaat, “Staircase structure of Shapiro steps”, Pis'ma v Zh. Èksper. Teoret. Fiz., 102:12 (2015), 919–922; JETP Letters, 102:12 (2015), 803–806
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https://www.mathnet.ru/eng/jetpl4816 https://www.mathnet.ru/eng/jetpl/v102/i12/p919
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Abstract page: | 149 | Full-text PDF : | 25 | References: | 44 | First page: | 18 |
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