Two-orbital Hubbard model vs spin S=1 Heisenberg model: studies on clusters
We perform exact numeric calculations for the two-orbital Hubbard model on the four-site cluster. In the limit of large on-site coupling the model becomes equivalent to the spin S “ 1 Heisenberg model. By comparing energy spectra of these two models, we quantified the range of interaction paramete...
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| Date: | 2018 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
2018
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| Series: | Condensed Matter Physics |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/157113 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Two-orbital Hubbard model vs spin S=1 Heisenberg model: studies on clusters / R. Lemański, J. Matysiak // Condensed Matter Physics. — 2018. — Т. 21, № 3. — С. 33301: 1–8. — Бібліогр.: 15 назв. — англ. |