Interchain interactions and magnetic properties of Li2CuO2

Details Interchain interactions and magnetic properties of Li2CuO2 Interchain interactions and magnetic properties of Li2CuO2

1999-04-20

arxiv.org/abs/cond-mat/9904283v2

Phys. Rev. B 60, 6230-6233 (1999)

Physics

Condensed Matter

4 pages, 3 figures, RevTeX

Scientific paper

10.1103/PhysRevB.60.6230

An effective Hamiltonian is constructed for an insulating cuprate with edge-sharing chains Li2CuO2.The Hamiltonian contains the nearest and next-nearest neighboring intrachain and zigzag-type interchain interactions.The values of the interactions are obtained from the analysis of the magnetic susceptibility, and this system is found to be described as coupled frustrated chains.We calculate the dynamical spin correlation function S(q,\omega) by using the exact diagonalization method, and show that the spectra of S(q,\omega) are characterized by the zigzag-type interchain interactions. The results of the recent inelastic neutron scattering experiment are discussed in the light of the calculated spectra.

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