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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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