Localized and itinerant character of electron states in the photoemission from CuGeO3

Solid State Communications

Volumn 104, Issue 5, 1997, Pages 301-305

  Villafiorita, A ^a   Manghi, F ^a   Parmigiani, F ^b   Calandra, C ^a  

^a UNIVERSITY OF MODENA AND REGGIO EMILIA   (Italy)

^b POLITECNICO DI MILANO   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

BAND STRUCTURE; EIGENVALUES AND EIGENFUNCTIONS; PHOTOEMISSION;

ELECTRON CORRELATION; MULTIBAND HAMILTONIAN;

OXIDE SUPERCONDUCTORS;

EID: 0031275759     PISSN: 00381098     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0038-1098(97)00164-6     Document Type: Article

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20. A quantitative study of this aspect would require the explicit calculation of the excited states of the N-particle system. Within our approach this can be done with an extension of the configuration expansion, an implementation which is straight-forward in a perturbative scheme but which requires further efforts to deal with the strongly correlated systems of interest here.