Dynamic exchange coupling in magnetic bilayers

Preprint

12 May 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0210588

Abstract

A long-ranged dynamic interaction between ferromagnetic films separated by normal-metal spacers is reported, which is communicated by nonequilibrium spin currents. It is measured by ferromagnetic resonance (FMR) and explained by an adiabatic spin-pump theory. In FMR the spin-pump mechanism of spatially separated magnetic moments leads to an appreciable increase in the FMR line width when the resonance fields are well apart, and results in a dramatic line-width narrowing when the FMR fields approach each other.

Keywords

FERROMAGNETIC FILMS
MAGNETIC BILAYERS
EXCHANGE COUPLING
DYNAMIC EXCHANGE
FILMS SEPARATED
RANGED DYNAMIC
LINE WIDTH
SPIN PUMP
FMR

All Related Versions

Version 1, 2002-10-26, ArXiv
Version 2, 2003-05-12, ArXiv
Published version: Physical Review Letters, 90 (18), 187601.

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