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Physics  1998 

Spin excitations in ferromagnetic manganites

DOI: 10.1016/S0921-4526(98)01128-4

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Abstract:

An effective one-band Hamiltonian for colossal-magnetoresistance (CMR) manganites is constructed and the spin excitations are determined. Fitting the experimental data by the derived spin-wave dispersion gives an e_g -electron hopping amplitude of about 0.2 eV in agreement with LDA band calculations.

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