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A theoretical analysis of the magnetic properties of La2CuO4


The magnetic properties of the La2CuO4 are analyzed by means of the paramagnetic solution of the Hubbard model within the composite operator method. The experimental findings of the inelastic neutron magnetic scattering [R. Coldea et al., Phys. Rev. Lett. 86, 5377 (2001)] for the spin spectrum, the spin-wave intensity and the behavior of the dispersion at the zone boundary are well described by our results although the difference in phase. The Hubbard model emerges has a minimal model capable to describe the anomalous magnetic behavior of such a strongly correlated material.

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Received 29 July 2002 / Received in final form 2 January 2003 Published online 14 March 2003

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Avella, A., Mancini, F. A theoretical analysis of the magnetic properties of La2CuO4 . Eur. Phys. J. B 32, 27–33 (2003).

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  • PACS. 75.50.-y Studies of specific magnetic materials – 71.10.-w Theories and models of many-electron systems – 71.27.+a Strongly correlated electron systems; heavy fermions