Scaling relation of spin wave lifetime in double-exchange systems

Details Scaling relation of spin wave lifetime in double-exchange systems Scaling relation of spin wave lifetime in double-exchange systems

1997-09-26

arxiv.org/abs/cond-mat/9709294v1

Physics

Condensed Matter

Strongly Correlated Electrons

To be published in Physica B

Scientific paper

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.

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