01-13U
01-13U
UDC:
538.935
PACS:
71.10.Fd, 71.38.+i, 77.80.Bh, 63.20.Ry The density of electron states in Hubbard model in the limit of infinite dimensinality of a space.
In this work the electron energy spectrum of metal described in the framework of the Hubbard model is investigated. The approximate analytical scheme of the dynamical mean field method is used. The single-particle Green's function is calculated in the various approximations( Alloy-Analogy and Modified Alloy-Analogy approaches as well as generalized Hubbard-3 approximation). The concentrational dependences of chemical potential and of the edges of energy bands as well as the peculiarifies of the electron density of states in the region of the metal-insulator transition are studied.
Submitted:
Condensed Matter Physics
Year:
2001
Pages:
21
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