Band electron spectrum and thermodynamic properties of the pseudospin-electron model with tunneling splitting of levels

Band electron spectrum and thermodynamic properties of the pseudospin-electron model with tunneling splitting of levels

Інші назви: Електронний спектр та термодинамічні властивості псевдоспін-електронної моделі з тунельними розщепленнями рівнів

Інший ID: PACS: 71.10.Fd
DOI:10.5488/CMP.9.1.135

URI: http://dspace.nbuv.gov.ua/handle/123456789/121307

Посилання: Band electron spectrum and thermodynamic properties of the pseudospin-electron model with tunneling splitting of levels / O.Ya. Farenyuk, A.M. Shvaika // Condensed Matter Physics. — 2006. — Т. 9, № 1(45). — С. 135–144. — Бібліогр.: 30 назв. — англ.

Дата: 2006

Завантажень: 292

Band electron spectrum and thermodynamic properties of the pseudospin-electron model with tunneling splitting of levels

Анотація:

The pseudospin-electron model with tunneling splitting of levels is considered. Generalization of dynamic mean-field method for systems with correlated hopping was applied to the investigation of the model. Electron spectra, electron concentrations, average values of pseudospins and grand canonical potential were calculated within the alloy-analogy approximation. Electron spectrum and dependencies of the electron concentrations on chemical potential were obtained. It was shown that in the alloy-analogy approximation, the model possesses the first order phase transition to ferromagnetic state with the change of chemical potential and the second order phase transition with the change of temperature.

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