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Polar Jahn-Teller centers and magnetic neutron scattering cross-section in copper oxides

A. S. Moskvin, A. S. Ovchinnikov

cond-mat.supr-conarXiv:cond-mat/9709033

Abstract

In the framework of the model of the polar singlet-triplet Jahn-Teller centers the cross-section is obtained for magnetic neutron scattering in high-Tc cuprates. Multi-mode character of the CuO4 cluster ground manifold in the new phase of polar centers determines the dependence of magnetic form-factor on the local structure and charge state of the center. It is shown that magnetic inelastic neutron scattering in the system of the polar singlet-triplet Jahn-Teller centers permits to investigate the non-magnetic charge and structure excitations.

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