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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2024, Volume 119, Issue 6, Pages 426–431
DOI: https://doi.org/10.31857/S1234567824060041 (Mi jetpl7181) 		 
CONDENSED MATTER

Granular aluminum kinetic inductance nonlinearity

M. V. Zhdanova, I. E. Pologov, G. Yu. Svyatsky, V. I. Chichkov, N. A. Maleeva

National University of Science and Technology MISIS, Moscow, 119049 Russia
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DOI: https://doi.org/10.31857/S1234567824060041
Abstract: Granular Aluminum is a superconductor known for more than eighty years, which recently found its application in qubits, microwave detectors and compact resonators, due to its high kinetic inductance, critical magnetic field and critical current. Here we report on the nonlinear dependence of granular Aluminum inductance on current, which hints towards parametric amplification of the microwave signal in granular Aluminum films. The phase shift of the microwave signal reached $4$ rad at a frequency of $7$ GHz, which makes it possible to estimate the nonlinearity of the system as $\Delta \phi {\text{/}}\phi = 1.4\% $ and the potential gain of the order of $17$ dB.
Funding agency Grant number
Russian Science Foundation 21-72-30026
Ministry of Science and Higher Education of the Russian Federation К2-2022-029
The study of the granular Aluminum kinetic inductance nonlinearity was supported by Russian Science Foundation (project no. 21-72-30026, https://rscf.ru/en/project/21-72-30026/). The review of research on materials with high kinetic inductance and TWPA realizations was supported by the Strategic Academic Leadership Program Priority-2030 (project no. K2-2022-029 for the National University of Science and Technology MISIS).
Received: 25.01.2024
Revised: 09.02.2024
Accepted: 09.02.2024
English version:
Journal of Experimental and Theoretical Physics Letters, 2024, Volume 119, Issue 6, Pages 439–443
DOI: https://doi.org/10.1134/S002136402460037X
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Document Type: Article
Language: Russian
Citation: M. V. Zhdanova, I. E. Pologov, G. Yu. Svyatsky, V. I. Chichkov, N. A. Maleeva, “Granular aluminum kinetic inductance nonlinearity”, Pis'ma v Zh. Èksper. Teoret. Fiz., 119:6 (2024), 426–431; JETP Letters, 119:6 (2024), 439–443
Citation in format AMSBIB
\Bibitem{ZhdPolSvy24}
\by M.~V.~Zhdanova, I.~E.~Pologov, G.~Yu.~Svyatsky, V.~I.~Chichkov, N.~A.~Maleeva
\paper Granular aluminum kinetic inductance nonlinearity
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2024
\vol 119
\issue 6
\pages 426--431
\mathnet{http://mi.mathnet.ru/jetpl7181}
\crossref{https://doi.org/10.31857/S1234567824060041}
\edn{https://elibrary.ru/NZTNPR}
\transl
\jour JETP Letters
\yr 2024
\vol 119
\issue 6
\pages 439--443
\crossref{https://doi.org/10.1134/S002136402460037X}
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