Fizika Nizkikh Temperatur: Volume 47, Number 5 (May 2021), p. 424-428    ( to contents , go back )

Return current of dc SQUID based on tunnel Josephson junctions with unconventional current-phase relation

I. N. Askerzade

Department of Computer Engineering and Center of Excellence of Superconductivity Research, Ankara University Ankara 06100, Turkey
E-mail: imasker@eng.ankara.edu.tr

Institute of Physics of the Azerbaijan National Academy of Sciences, Baku AZ1143, Azerbaijan

R. Askerbeyli

Karabuk University, Department of Business Administration, Karabuk, Turkey
pos Анотація:595

Received January 14, 2021, published online March 26, 2021

Abstract

We carried out the analysis of the return current of dc SQUID based on tunnel Josephson junction with unconventional current-phase relation. We analyzed two cases of current-phase relation with additional terms to the first harmonic sin φ: a case of the second harmonic sin 2φ and the case of the fractional term sin (φ/2). It is shown that the changing of the return current of dc SQUID on junctions with unconventional current-phase relation is determined by the amplitude of the second term in current-phase relation, geometrical inductance, and external magnetic field.

Key words: dc SQUID, current-phase relation, return current, anharmonic and fractional terms.

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