Please use this identifier to cite or link to this item: https://elar.usfeu.ru/handle/123456789/8833
Title: Symmetrical Hubbard model in the d = ∞ limit: Low: Temperature paramagnetic solution
Authors: Chashchin, N. I.
Issue Date: 2012
Publisher: Pleiades Publishing
Citation: Chashchin, N. I. Symmetrical Hubbard model in the d = ∞ limit: Low: Temperature paramagnetic solution / N. I. Chashchin // Physics of Metals and Metallography. – 2012. – Vol. 113. – Iss. 6. – P. 533-540.
Abstract: Based on the previously obtained equations, a paramagnetic solution to the symmetrical Hubbard model for the case of d = ∞, T = 0 K has been investigated. The solutions obtained are represented in the form of graphs of the density of electron states, number of doubly occupied lattice sites D, internal energy of the system E, and static paramagnetic susceptibility X as functions of electron interaction U. The calculation results show that the stable regimes of the formation of local moments at 0 < U < 1.8 and of the strong Kondo scattering in the region of 2.8 < U < 6.0 are separated by a region (1.8 < U < 2.8) where the behavior of the system becomes irregular. The parameter D randomly takes positive and negative magnitudes, whereas the susceptibility is positive (X > 0) and the average energy E is approximately const; this indicates the occurrence of a structural rearrangement, which is accompanied by phase separation. © Pleiades Publishing, Ltd., 2012.
Keywords: Hubbard MODEL
INFINITE-DIMENSIONAL LATTICE
PARAMAGNETIC SUSCEPTIBILITY
PHASE SEPARATION
AVERAGE ENERGY
DENSITY OF ELECTRON STATE
ELECTRON INTERACTION
INFINITE-DIMENSIONAL LATTICE
INTERNAL ENERGIES
KONDO SCATTERING
LATTICE SITES
LOCAL MOMENTS
PARAMAGNETIC SUSCEPTIBILITY
STRUCTURAL REARRANGEMENT
Hubbard MODEL
PHASE SEPARATION
PARAMAGNETISM
URI: https://elar.usfeu.ru/handle/123456789/8833
DOI: 10.1134/S0031918X12060051
SCOPUS: 2-s2.0-84863635756
WoS: WOS:000305131200001
RSCI: 20475948
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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