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Dynamic spin susceptibility of paramagnetic spinel LiV2O4

V. Yushankhai·A. Yaresko·P. Fulde·P. Thalmeier
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Abstract

In an attempt to explain inelastic neutron scattering data for LiV2O4 the dynamical spin susceptibility χ(Q,w) at zero temperature is calculated. Starting point is a weak coupling approach based on the LDA bandstructure for that material. It is supplemented by a RPA treatment of local on-site interactions and contains an adjustable parameter. Due to the geometrically frustrated lattice structure the magnetic response is strongly enhanced in the vicinity of a nearly spherical surface in Q-space. We compare these results with recent low-temperature neutron scattering data. The measured spin relaxation rate Γis used to estimate the spin fluctuation contribution to the specific heat.

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V. Yushankhai, A. Yaresko, P. Fulde, P. Thalmeier. 2007-03-17. Dynamic spin susceptibility of paramagnetic spinel LiV2O4. https://doi.org/10.1103/physrevb.76.085111

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