Физика Низких Температур: Том 47, Выпуск 5 (Май 2021), c. 424-428 ( к оглавлению , назад )
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
Institute of Physics of the Azerbaijan National Academy of Sciences, Baku AZ1143, Azerbaijan
Karabuk University, Department of Business Administration, Karabuk, Turkey
Received January 14, 2021, published online March 26, 2021
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.