Electron correlations in narrow energy bands pdf

Has PDF. Publication Type. More Filters. The general model for electronic subsystem of doped fullerides suitable for description of both semiconducting behavior and magnetic order onset with Coulomb correlation, intersite exchange … Expand.

Abstract The interplay of the inter-site Coulomb repulsion which induces charge ordering, and the correlated hopping of electrons, which causes peculiar dependence of energy characteristics on a … Expand. Springer Proceedings in Physics. A generalized model of strongly correlated electron system in quantum dot arrays with magnetic impurity levels hybridized with conduction band is considered.

The effective Hamiltonians on the basis … Expand. New insights into the microscopic origin of itinerant ferromagnetism were recently gained from investigations of electronic lattice models within dynamical mean- field theory DMFT. A method is outlined for improving the theory so as to give the correct low-density result. In addition, the possibility of obtaining a minimum principle for the theory is explored. Laura M. Learn about our response to COVID , including freely available research and expanded remote access support.

Electron Correlation in Narrow Energy Bands. Roth Phys. Abstract An improved version of Hubbard's treatment of correlation in a nondegenerate narrow band is obtained by the use of a new Green's-function decoupling scheme.

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Citation Type. Has PDF. Publication Type. More Filters. To investigate the effects of electron correlation in narrow energy bands, a general formula of static spin susceptibility for interacting electron systems is derived. It is expressed in terms of the … Expand. On correlation effects in a narrow-band model with electron—hole asymmetry.

Some correlation effects are studied in a narrow-band model with electron—hole asymmetry. The ground-state energy, wave function, and the chemical potentials … Expand. View 2 excerpts, references results. In the present paper pressure-temperature phase diagram of a generalized Hubbard model with correlated hopping in a paramagnetic state at half-filling is determined by means of the generalized … Expand.

Change of electronic structures with carrier doping in the highly correlated electron system Y1-xCaxTiO3. Physical review. B, Condensed matter. Highly Influential. View 4 excerpts, references background. Electron correlations in narrow energy bands - IV. The atomic representation. A reformulation and extension of the previous theory is described. The new formulation has the advantage of being conceptually simpler than the earlier theory; it can, in fact, be developed in close … Expand.

Metal-Insulator Transitions Revisited. This text surveys the various aspects of the fundamental problem related to the metallic and non-metallic states of matter, a question physicists have been studying for almost years.