Energy Spectrum and Electrical Conductivity of Systems with the Strong Electronic Correlations

Theory of electroconductivity in crystals with strong electron correlations is developed. Different approaches for description of disordered-systems’ electroconductivity are considered. The method of two-particle Green’s function (electroconductivity) calculation for disordered crystals is developed...

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Main Author:	S. P. Repetskyi, V. B. Molodkin, I. G. Vyshyvana, E. G. Len, I. M. Melnyk, O. I. Musienko, B. V. Stashchuk
Format:	Article
Language:	English
Published:	G. V. Kurdyumov Institute for Metal Physics of the N.A.S. of Ukraine 2009-09-01
Series:	Успехи физики металлов
Online Access:	https://doi.org/10.15407/ufm.10.03.283

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spelling	doaj-04e0ed49bfaf435087453d15c1c9a70d2020-11-25T03:35:00ZengG. V. Kurdyumov Institute for Metal Physics of the N.A.S. of UkraineУспехи физики металлов 1608-10212617-07952009-09-0110328333010.15407/ufm.10.03.283Energy Spectrum and Electrical Conductivity of Systems with the Strong Electronic CorrelationsS. P. Repetskyi, V. B. Molodkin, I. G. Vyshyvana, E. G. Len, I. M. Melnyk, O. I. Musienko, B. V. StashchukTheory of electroconductivity in crystals with strong electron correlations is developed. Different approaches for description of disordered-systems’ electroconductivity are considered. The method of two-particle Green’s function (electroconductivity) calculation for disordered crystals is developed. The processes of electron scattering on spin and density fluctuations, ion-core potentials and vibrations of a crystal lattice are taken into account. Calculations are based on a diagram technique for temperature Green’s functions. The cluster expansion for two-particle Green function is obtained. The coherent-potential approximation is chosen as a zeroth-order one-site approximation in above-mentioned cluster expansion. The energy spectrum of electrons, atomic and magnetic orderings, optical conductivity, temperature and concentration dependences of electroresistance and spin-dependent transport of Fe–Co alloy are investigated.https://doi.org/10.15407/ufm.10.03.283
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	S. P. Repetskyi, V. B. Molodkin, I. G. Vyshyvana, E. G. Len, I. M. Melnyk, O. I. Musienko, B. V. Stashchuk
spellingShingle	S. P. Repetskyi, V. B. Molodkin, I. G. Vyshyvana, E. G. Len, I. M. Melnyk, O. I. Musienko, B. V. Stashchuk Energy Spectrum and Electrical Conductivity of Systems with the Strong Electronic Correlations Успехи физики металлов
author_facet	S. P. Repetskyi, V. B. Molodkin, I. G. Vyshyvana, E. G. Len, I. M. Melnyk, O. I. Musienko, B. V. Stashchuk
author_sort	S. P. Repetskyi, V. B. Molodkin, I. G. Vyshyvana, E. G. Len, I. M. Melnyk, O. I. Musienko, B. V. Stashchuk
title	Energy Spectrum and Electrical Conductivity of Systems with the Strong Electronic Correlations
title_short	Energy Spectrum and Electrical Conductivity of Systems with the Strong Electronic Correlations
title_full	Energy Spectrum and Electrical Conductivity of Systems with the Strong Electronic Correlations
title_fullStr	Energy Spectrum and Electrical Conductivity of Systems with the Strong Electronic Correlations
title_full_unstemmed	Energy Spectrum and Electrical Conductivity of Systems with the Strong Electronic Correlations
title_sort	energy spectrum and electrical conductivity of systems with the strong electronic correlations
publisher	G. V. Kurdyumov Institute for Metal Physics of the N.A.S. of Ukraine
series	Успехи физики металлов
issn	1608-1021 2617-0795
publishDate	2009-09-01
description	Theory of electroconductivity in crystals with strong electron correlations is developed. Different approaches for description of disordered-systems’ electroconductivity are considered. The method of two-particle Green’s function (electroconductivity) calculation for disordered crystals is developed. The processes of electron scattering on spin and density fluctuations, ion-core potentials and vibrations of a crystal lattice are taken into account. Calculations are based on a diagram technique for temperature Green’s functions. The cluster expansion for two-particle Green function is obtained. The coherent-potential approximation is chosen as a zeroth-order one-site approximation in above-mentioned cluster expansion. The energy spectrum of electrons, atomic and magnetic orderings, optical conductivity, temperature and concentration dependences of electroresistance and spin-dependent transport of Fe–Co alloy are investigated.
url	https://doi.org/10.15407/ufm.10.03.283
work_keys_str_mv	AT sprepetskyivbmolodkinigvyshyvanaeglenimmelnykoimusienkobvstashchuk energyspectrumandelectricalconductivityofsystemswiththestrongelectroniccorrelations
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Energy Spectrum and Electrical Conductivity of Systems with the Strong Electronic Correlations

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