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Phase Diagram of Metal-Insulator Transition in System with Anderson-Hubbard Centers | | Yuriy Skorenkyy
; Leonid Didukh
; Oleksandr Kramar
; Yuriy Dovhopyaty
; | | Date: |
29 Dec 2011 | | Abstract: | The model of a strongly correlated system in which periodically spaced
Anderson-Hubbard centers are introduced into narrow-band metal is considered.
Besides the interactions between localized magnetic moments and strong on-site
Coulomb interaction, the model takes into account the hybridization of
localized and band states. To study the efect of the lattice deformation on the
electrical properties of the system the phonon term and elastic energy have
been taken into account. Green functions for band and localized electrons have
been found. On this base, the energy spectrum has been investigated as function
of model parameters, temperature and external pressure. The criterion of
metal-insulator transition for integer value of electron concentration has been
derived and the phase diagram of the metal-insulator transition has been built. | | Source: | arXiv, 1112.6325 | | Services: | Forum | Review | PDF | Favorites | |
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