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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| Datum: | 2018 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут фізики конденсованих систем НАН України
2018
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| Schriftenreihe: | Condensed Matter Physics |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/157113 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | 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. |