Amplitude representation of Landau-Lifshitz equation and its application to ferromagnetic films

TL;DR

This paper introduces an amplitude-based approach to solving the Landau-Lifshitz equation using magnon wave functions, applying it to ferromagnetic films and reviewing recent advances including Bose-Einstein condensation of magnons at room temperature.

Contribution

It develops a systematic amplitude representation of the Landau-Lifshitz equation and applies it to analyze phenomena in ferromagnetic films, including magnon condensation.

Findings

Amplitude representation simplifies analysis of ferromagnetic dynamics

Application to Bose-Einstein condensation of magnons at room temperature

Provides a comprehensive review of recent advances in ferromagnetic films

Abstract

The purpose of this article is to develop a systematic approach to the solution of the Landau-Lifshitz equation in terms of the magnon wave function {\psi} (r) and apply it to physical phenomena in a thin ferromagnetic film. This article has also a purpose to represent the modern state of art for the properties of ferromagnetic films and the pumping-induced Bose-Einstein condensation of magnons in them at room temperature. Thus, it can be considered as a review on basic principles and the recent advances in the field.