Determination of Cooper pairs and Majorana fermions currents ratio in dc SQUID with topologically nontrivial barriers

• Published in: Физика низких температур
• Date: 2017
• Main Authors: Rahmonov, I.R., Shukrinov, Yu.M., Dawood, R., El Samman, H.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2017
• Subjects: Сверхпроводящие и мезоскопические структуры. К 70-летию со дня рождения А.Н. Омельянчука
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/129537
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Determination of Cooper pairs and Majorana fermions currents ratio in dc SQUID with topologically nontrivial barriers / I.R. Rahmonov, Yu.M. Shukrinov, R. Dawood, H. El Samman // Физика низких температур. — 2017. — Т. 43, № 7. — С. 1032-1036. — Бібліогр.: 15 назв. — англ.

We present the results of numerical study of the phase dynamics of the dc SQUID with topologically trivial and nontrivial barriers. In our calculations we take into account two components of superconducting current, Cooper pairs (2π periodic) and Majorana fermions (4π periodic) currents. Magnetic field dependence of return current is presented. The qualitative behavior of this dependence is explained. We show that in case of two-component superconducting current the periodicity of magnetic field dependence of return current displaced by Cooper pairs and Majorana fermion ratio over the magnetic field. This effect makes possible the experimental determination of ratio of Cooper pairs and Majorana fermions currents.