Influence of finite hund rules and charge transfer on properties of haldane systems

We consider the Kondo-Hubbard model with ferromagnetic exchange coupling JH, showing that it is an approximate effective model for late transition-metal–O linear systems. We study the dependence of the charge and spin gaps ΔC,ΔS, and several spin-spin correlation functions, including the hidden orde...

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Autores principales: Feiguin, A.E., Arrachea, L., Aligia, A.A.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10980121_v59_n15_p9916_Feiguin
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