On the line shape of the electrically detected ferromagnetic resonance

TL;DR

This paper reviews the mechanisms behind photovoltage generation in electrically detected ferromagnetic resonance and emphasizes the importance of proper line shape analysis for accurate interpretation of experimental data.

Contribution

It clarifies the different mechanisms causing photovoltage in FMR and highlights the critical need for correct line shape analysis in experimental studies.

Findings

Distinction between mechanisms producing photovoltage in FMR

Importance of accurate line shape analysis for data interpretation

Implications for studying spin pumping and spin Hall effects

Abstract

This work reviews and examines two particular issues related with the new technique of electrical detection of ferromagnetic resonance (FMR). This powerful technique has been broadly applied for studying magnetization and spin dynamics over the past few years. The first issue is the relation and distinction between different mechanisms that give rise to a photovoltage via FMR in composite magnetic structures, and the second is the proper analysis of the FMR line shape, which remains the "Achilles heel" in interpreting experimental results, especially for either studying the spin pumping effect or quantifying the spin Hall angles via the electrically detected FMR.