Validity of t–J approximation for extended Hubbard model with strong repulsion
It is shown that for finite cyclic systems described by two band Hubbard Hamiltonian with strong electron repulsion the reduction to effective t–J model may give incorrect description of the ground state symmetry due to neglect of the correlated hopping terms.
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| Date: | 2018 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
| Published: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2018
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| Series: | Физика низких температур |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/176241 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Validity of t–J approximation for extended Hubbard model with strong repulsion / V.O. Cheranovskii, D.J. Klein, E.V. Ezerskaya, V.V. Tokarev// Физика низких температур. — 2018. — Т. 44, № 11. — С. 1622-1625. — Бібліогр.: 10 назв. — англ. |