Issledovanie kontaktov Dzhozefsona Pb0.6In0.4 / KFe2As2 i KFe2As2 / KFe2As2.proverka simmetrii parametra poryadka
- Авторлар: Golubkov M.1,2, Stepanov V.1, Sadakov A.1, Usol'tsev A.1, Morozov I.3
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Мекемелер:
- Lebedev Physical Institute, Russian Academy of Sciences
- National Research Technological University MISiS
- Moscow State University
- Шығарылым: Том 163, № 2 (2023)
- Беттер: 180-188
- Бөлім: Articles
- URL: https://journals.rcsi.science/0044-4510/article/view/145253
- DOI: https://doi.org/10.31857/S0044451023020050
- EDN: https://elibrary.ru/OQHRUY
- ID: 145253
Дәйексөз келтіру
Аннотация
The characteristics of point Josephson contacts Pb0.6In0.4/KFe2As2 and KFe2As2/KFe2As2 have been studied. The temperature dependences of characteristic contact voltages VC(T) and the dependences of the first current step amplitudes in I–V characteristics on the power of 7.6-GHz electromagnetic radiation have been measured. It has been found that VC(T) curves for all contacts can be described in terms of the SIS*IS contact model (S, I, and S* stand for superconductor, insulator, and superconductor with a lower critical temperature, respectively) for superconductors with the s-symmetry of order parameter. It has been proved that the current step oscillation period as a function of microwave power can be exactly approximated with the resistive model of contact with IS = ICsin(φ). Obtained data are consistent with the normal s-symmetry of order parameter.
Авторлар туралы
M. Golubkov
Lebedev Physical Institute, Russian Academy of Sciences; National Research Technological University MISiS
Email: golubkov@lebedev.ru
119991, Moscow, Russia; 119049, Moscow, Russia
V. Stepanov
Lebedev Physical Institute, Russian Academy of Sciences
Email: golubkov@lebedev.ru
119991, Moscow, Russia
A. Sadakov
Lebedev Physical Institute, Russian Academy of Sciences
Email: golubkov@lebedev.ru
119991, Moscow, Russia
A. Usol'tsev
Lebedev Physical Institute, Russian Academy of Sciences
Email: golubkov@lebedev.ru
119991, Moscow, Russia
I. Morozov
Moscow State University
Хат алмасуға жауапты Автор.
Email: golubkov@lebedev.ru
119049, Moscow, Russia
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