Coherent spin relaxation in molecular magnets

TL;DR

This paper uses numerical simulations to study ultrafast coherent spin relaxation in nanomagnets formed by high-spin magnetic molecules, focusing on the effects of system parameters and sample geometry.

Contribution

It provides a detailed numerical analysis of coherent spin relaxation in nanomagnets, highlighting the influence of system parameters and geometry on the process.

Findings

Coherent spin relaxation occurs on ultrafast timescales, shorter than transverse dephasing.

System parameters significantly influence the relaxation dynamics.

Sample geometry affects the relaxation process.

Abstract

Numerical modelling of coherent spin relaxation in nanomagnets, formed by magnetic molecules of high spins, is accomplished. Such a coherent spin dynamics can be realized in the presence of a resonant electric circuit coupled to the magnet. Computer simulations for a system of a large number of interacting spins is an efficient tool for studying the microscopic properties of such systems. Coherent spin relaxation is an ultrafast process, with the relaxation time that can be an order shorter than the transverse spin dephasing time. The influence of different system parameters on the relaxation process is analysed. The role of the sample geometry on the spin relaxation is investigated.