Spin excitations in ferromagnetic manganites

Details Spin excitations in ferromagnetic manganites Spin excitations in ferromagnetic manganites

1998-07-22

arxiv.org/abs/cond-mat/9807294v1

Physica B, 259-261, 801 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, 1 figure

Scientific paper

10.1016/S0921-4526(98)01128-4

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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