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

R. Kajimoto·H. Yoshizawa·H. Kawano-Furukawa·H. Kuwahara·Y. Tomioka·Y. Tokura
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Abstract

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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R. Kajimoto, H. Yoshizawa, H. Kawano-Furukawa, H. Kuwahara, Y. Tomioka, Y. Tokura. 2000-06-06. Orbital-ordering-induced anomalous softening of the ferromagnetic spin waves in perovskite manganites. https://doi.org/10.1016/s0304-8853(00)00639-9

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