Magnon scattering processes and low temperature resistivity in CMR manganites

Details Magnon scattering processes and low temperature resistivity in CMR manganites Magnon scattering processes and low temperature resistivity in CMR manganites

2000-09-04

arxiv.org/abs/cond-mat/0009036v1

Physics

Condensed Matter

Strongly Correlated Electrons

To appear in Proc. ICM 2000

Scientific paper

10.1016/S0304-8853(00)00748-4

Low temperature resistivity of CMR manganites is investigated. At the ground state, conduction electrons are perfectly spin polarized, which is called half-metallic. From one-magnon scattering processes, it is discussed that the resistivity of a half metal as a function of temperature scales as rho(T) - rho(0) propto T^3. We take (Nd,Tb,Sr)MnO_3 as an example to compare theory and experiments. The result is in a good agreement.

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