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...
Guardado en:
| Publicado: |
1999
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v59_n15_p9916_Feiguin http://hdl.handle.net/20.500.12110/paper_10980121_v59_n15_p9916_Feiguin |
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