Orbital-ordering-induced anomalous softening of the ferromagnetic spin waves in perovskite manganites

Details Orbital-ordering-induced anomalous softening of the ferromagnetic spin waves in perovskite manganites Orbital-ordering-induced anomalous softening of the ferromagnetic spin waves in perovskite manganites

2000-05-29

arxiv.org/abs/cond-mat/0005497v2

J. Magn. Magn. Mater. 226-230, 892 (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, 1 figure, proceeding of ICM2000. Corrected typos

Scientific paper

10.1016/S0304-8853(00)00639-9

Spin wave excitations were measured in the ferromagnetic phase of
Nd$_{1/2}$Sr$_{1/2}$MnO$_{3}$ by neutron scattering. This compound is located
in proximity to the A-type antiferromagnetic state, and it shows a clear
anisotropy and anomalous softening of the spin wave excitations. The softening
in the ferromagnetic phase is induced by the orbital ordering.

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