Abstract:
The dynamics of the magnetization under the action of a current pulse in a $\phi_0$ Josephson junction with the direct coupling between the magnetic moment and a superconducting current has been analyzed. Time dependences of the components of the magnetic moment at different parameters of the $\phi_0$ junction have been calculated. These dependences have been used to determine intervals of the parameters where the magnetic moment is reversed from $m_z=1$ to $m_z=-1$. Periodicity has been revealed in the appearance of intervals of the reversal of the magnetic moment under the variation of the spin-orbit coupling, Gilbert damping parameter, and Josephson-to-magnetic energy ratio. The results obtained can be used in various fields of superconducting spintronics, in particular, to create a memory unit based on the Josephson $\phi_0$ junction.
This work was supported by the Russian Foundation for Basic Research (project nos. 18-02-00318 and 18-52-45011)
and by the JINR–Bulgaria cooperation program. The numerical calculations were supported by the Russian Science Foundation (project no. 18-71-10095). S.A. Panayotova acknowledges the support of the Bulgarian National
Program “Young Scientists and Doctoral Students 2019” and the Bulgarian National Science Fund (grant
no. MU19-FMI-010 for the University of Plovdiv Paisii Hilendarski).
Citation:
P. Kh. Atanasova, S. A. Panayotova, I. R. Rahmonov, Yu. M. Shukrinov, E. V. Zemlyanaya, M. V. Bashashin, “Periodicity in the appearance of intervals of the reversal of the magnetic moment of a $\phi_0$ Josephson junction”, Pis'ma v Zh. Èksper. Teoret. Fiz., 110:11 (2019), 736–740; JETP Letters, 110:11 (2019), 722–726
\Bibitem{AtaPanRah19}
\by P.~Kh.~Atanasova, S.~A.~Panayotova, I.~R.~Rahmonov, Yu.~M.~Shukrinov, E.~V.~Zemlyanaya, M.~V.~Bashashin
\paper Periodicity in the appearance of intervals of the reversal of the magnetic moment of a $\phi_0$ Josephson junction
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2019
\vol 110
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\pages 736--740
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\jour JETP Letters
\yr 2019
\vol 110
\issue 11
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\crossref{https://doi.org/10.1134/S0021364019230073}
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https://www.mathnet.ru/eng/jetpl6058
https://www.mathnet.ru/eng/jetpl/v110/i11/p736
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