Self-organized quantum transitions in a spin-electron coupled system

TL;DR

This paper explores the quantum dynamics of excited electronic states in a spin-electron system, revealing self-organized transitions and resonant precession phenomena through coupled quantum-classical modeling.

Contribution

It introduces a novel approach combining quantum electron evolution with classical spin dynamics to study non-adiabatic transitions in a double-exchange model.

Findings

Identification of self-organized space-time structures in electron/spin dynamics

Discovery of resonant precession analogous to ESR process

Insights into relaxation mechanisms in spin-electron systems

Abstract

We investigate quantum dynamics of the excited electronic states in the double-exchange model at half-filling by solving coupled equations for the quantum evolution of electrons and Landau-Lifshits-Gilbert equation for classical spins. The non-adiabatic quantum transitions driving the relaxation are coordinated through the self-organized space-time structure of the electron/spin dynamics leading to a resonant precession analogous to the ESR process.