Current induced magnetization dynamics and magnetization switching in superconducting ferromagnetic hybrid (F$|$S$|$F) structures

TL;DR

This paper explores how electrical currents can induce magnetization switching in a superconducting hybrid structure with ferromagnetic layers, using numerical simulations based on modified Landau-Lifshitz-Gilbert equations and Ginzburg-Landau theory.

Contribution

It introduces a novel analysis of current-induced magnetization dynamics in p-wave superconductor/ferromagnet hybrids, demonstrating conditions for switching and calculating switching times.

Findings

Current-induced magnetization switching is possible in ferromagnetic superconducting hybrids.

Switching time depends on magnetic configuration and bias current.

The study provides insights for designing superconducting spintronic devices.

Abstract

We investigate the current induced magnetization dynamics and magnetization switching in an unconventional p-wave superconductor sandwiched between two misaligned ferromagnetic layers by numerically solving Landau-Lifshitz-Gilbert equation modified with current induced Slonczewski's spin torque term. A modified form of Ginzburg-Landau free energy functional has been used for this purpose. We demonstrated the possibility of current induced magnetization switching in the spin-triplet ferromagnetic superconducting hybrid structures with strong easy axis anisotropy and the condition for magnetization reversal. The switching time for such arrangement is calculated and is found to be highly dependent on the magnetic configuration along with the biasing current. This study would be useful in designing practical superconducting-spintronic devices.