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

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.

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

References in corpus (1)

• Theory of anomalous magnon softening in ferromagnetic manganites

Cited by in corpus (1)

• Novel stripe-type charge ordering in the metallic A-type antiferromagnet Pr{0.5}Sr{0.5}MnO{3}