Spin-Waves in MnP

Abstract

Spin-waves in MnP have been measured by means of neutron inelastic scattering at various temperatures. Dispersion relation along a-axis exhibits anomalous wave vector and temperature dependences, while the quadratic q dependence was observed along both b and c-axis. The characteristic feature of the spin-wave dispersion relations agree qualitatively with those predicted on analogy with rare earth metals.