Ground state ferromagnetism in a generalized Hubbard model with strong correlations
The present paper considers the ground state ferromagnetic ordering in a generalized Hubbard model with correlated hopping and interatomic exchange interaction in the case of strong correlations at non-integer band filling. The quasi-particle energy spectrum is obtained by means of a generalized...
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| Date: | 2003 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
2003
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| Series: | Condensed Matter Physics |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/120699 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Ground state ferromagnetism in a generalized Hubbard model with strong correlations / L. Didukh, O. Kramar // Condensed Matter Physics. — 2003. — Т. 6, № 1(33). — С. 145-158. — Бібліогр.: 46 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | The present paper considers the ground state ferromagnetic ordering in
a generalized Hubbard model with correlated hopping and interatomic exchange
interaction in the case of strong correlations at non-integer band
filling. The quasi-particle energy spectrum is obtained by means of a generalized
mean-field approximation. The ground state energy of the system
and the condition of ferromagnetic state realization are calculated. The dependences
of magnetization on energy parameters and band-filling are obtained. |
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