Abstract

Magnetic excitations in an itinerant antiferromagnet Mn3Si were measured up to an energy of 7kTN (15 meV) at 5.5 K by inelasic scattering of neutrons. The dispersion cones emanating from a pair of magnetic satellite Bragg points intersect at 5 meV and after that they combine into an anisotropic excitation centered at a Brillouin zone boundary.

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