Superexchange coupling and spin susceptibility spectral weight in undoped monolayer cuprates
نویسندگان
چکیده
A systematic inelastic neutron scattering study of the superexchange interaction in three different undoped monolayer cuprates (La2CuO4, Nd2CuO4 and Pr2CuO4) has been performed using conventional triple axis technique. We deduce the in-plane antiferromagnetic (AF) superexchange coupling J which actually presents no simple relation versus crystallographic parameters. The absolute spectral weight of the spin susceptibility has been obtained and it is found to be smaller than expected even when quantum corrections of the AF ground state are taken into account. PACS numbers: 75.40.Gb, 75.30.Et, 25.40.Fq, 74.72.Dn Typeset using REVTEX
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