The paramagnetic spectral response from LiV2O4

At low temperatures LiV2O4 exhibits short range paramagnetic correlations, peaked on momentum transfer Q similar to 0.6 Angstrom(-1). A marked evolution in the spectral intensity towards low Q values (Q --> 0) and low energy transfers omega is observed as the temperature is increased above 2 K (to similar to10 K and higher). The form of the spectral response is rather complex, requiring at least two spectral components to describe the scattering over the relatively small energy range investigated. We show that the observed paramagnetic spin fluctuations in LiV2O4, i.e. the spin degrees of freedom, can account reasonably well for its large specific heat coefficient gamma( = C/T).