Resonant control of magnetization in a shunted $\varphi_0$ junction with LC circuit

TL;DR

This paper demonstrates how resonant Josephson oscillations in a shunted $$ junction can control magnetization dynamics, enabling potential advancements in superconducting electronics and spintronics.

Contribution

It introduces a method for resonant control of magnetization in a $\u0010$ junction with an LC circuit, including analytical and numerical analysis of the magnetization tilt.

Findings

Resonance induces a time-independent superconducting current.

Magnetization precesses around a tilted axis due to coupling.

Tilt increases with spin-orbit interaction and energy ratio.

Abstract

The possibility of magnetization resonant control in a Josephson superconductor-ferromagnet-superconductor $\varphi_{0}$ junction shunted by an $LC$ circuit is demonstrated. As a result of the resonance of Josephson oscillations with oscillations in the circuit, a time-independent superconducting current arises in the junction. Due to the coupling of the Josephson phase and the magnetization of the ferromagnetic layer, the resulting superconducting current leads to a deviation of the easy axis from its initial position and to a precession of the magnetization around the tilted axis. We show that the tilt value increases with the increasing spin-orbit interaction and the Josephson to magnetic energy ratio. An analytical expression for the magnetization tilt is obtained, which agrees well with the results of numerical calculations. The emerging possibility of resonant control of magnetization in a shunted $\varphi_{0}$ junction can be used in the development of novel technologies in the field of superconducting electronics and spintronics.