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Scaling relation of spin wave lifetime in double-exchange systems

Nobuo Furukawa·Kazuma Hirota
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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.

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Nobuo Furukawa, Kazuma Hirota. 1997-09-26. Scaling relation of spin wave lifetime in double-exchange systems. https://doi.org/10.1016/s0921-4526(97)00716-3

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