Scaling relation of spin wave lifetime in double-exchange systems

Abstract

Spin excitation spectrum of CMR manganites are studied from both theoretical and experimental sides. Scaling relations for the spin wave lifetime in the electronic model with double-exchange interaction is observed, which is consistent with results for neutron inelastic scattering experiments for (La,Y)${}_{0.8}$Sr${}_{0.2}$MnO${}_3$. Roles of other interactions and degrees of freedom such as polaron effects are also discussed.

To be published in Physica B

References in corpus (1)

• Charge Localization in Disordered Colossal-Magnetoresistance Manganites

Cited by in corpus (2)

• Structure and Spin Dynamics of La${}_{0.85}$Sr${}_{0.15}$MnO${}_3$
• Spin Wave Theory of Double Exchange Ferromagnets