Peculiarities of magnetic moment switching in the φ₀-junction

¹ BLTP, Joint Institute for Nuclear Research - Dubna, 141980, Russian Federation
² The Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan - Almaty, 050032, Kazakhstan
³ State University Dubna - Dubna, 141980, Russian Federation
⁴ MIPT - Dolgoprudny, Moscow Region 141700, Russia
⁵ Department of Experimental Physics, Comenius University - Bratislava, Slovakia
⁶ Palacky University, Faculty of Science, Department of Experimental Physics - 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
⁷ Faculty of Nuclear Sciences and Physical Engineering, CTU - Trojanova 13, Prague, Czech Republic

^(a) belgibaev@theor.jinr.ru (corresponding author)

Received: 28 October 2021
Accepted: 22 December 2021

Abstract

We have investigated the dynamics of magnetization under a current pulse in a -junction with a direct coupling between the magnetic moment and the superconducting current. The correspondence between the magnetization value at the end of the pulse and the realization of the magnetization reversal along the easy axis of the ferromagnetic is considered. The crucial influence of the ratio w of the ferromagnetic frequency to the characteristic frequency of the Josephson junction on the results of reversal predictions is demonstrated. The effect of the w magnitude on the manifestation of periodicity bands in the dependence on the model parameters is shown. There is a critical value of the Gilbert damping, above which the magnetization reversal is not realized. It is shown that at small w the magnitude can be considered as a criterion of magnetization reversal. I.e., if , the magnetization reversal would happen with 100 percent probability. The results can be used in various areas of superconducting spintronics, in particular, to create a memory element based on the Josephson -junction.