Itinerancy effects on spin correlations in one-dimensional Mott insulators
We consider spin correlations in the one-dimensional (1D) half-filled repulsive Hubbard model. For very large values of the on-site repulsion U the spin correlations are dominated by virtual hopping processes of electrons and are described in terms of a spin-1/2 Heisenberg chain. As U is decreased r...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2005
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| _version_ | 1826302955228233728 |
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| author | Bhaseen, M Essler, F Grage, A |
| author_facet | Bhaseen, M Essler, F Grage, A |
| author_sort | Bhaseen, M |
| collection | OXFORD |
| description | We consider spin correlations in the one-dimensional (1D) half-filled repulsive Hubbard model. For very large values of the on-site repulsion U the spin correlations are dominated by virtual hopping processes of electrons and are described in terms of a spin-1/2 Heisenberg chain. As U is decreased real hopping processes of electrons become important and eventually dominate the spin response. We discuss the evolution of the dynamical structure factor as a function of U. We comment on the relevance of our results for inelastic neutron-scattering experiments on quasi-1D materials. ©2005 The American Physical Society. |
| first_indexed | 2024-03-07T05:55:18Z |
| format | Journal article |
| id | oxford-uuid:ea4cc4d0-ab40-4bec-911d-386a5f1f5345 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:55:18Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:ea4cc4d0-ab40-4bec-911d-386a5f1f53452022-03-27T11:01:02ZItinerancy effects on spin correlations in one-dimensional Mott insulatorsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ea4cc4d0-ab40-4bec-911d-386a5f1f5345EnglishSymplectic Elements at Oxford2005Bhaseen, MEssler, FGrage, AWe consider spin correlations in the one-dimensional (1D) half-filled repulsive Hubbard model. For very large values of the on-site repulsion U the spin correlations are dominated by virtual hopping processes of electrons and are described in terms of a spin-1/2 Heisenberg chain. As U is decreased real hopping processes of electrons become important and eventually dominate the spin response. We discuss the evolution of the dynamical structure factor as a function of U. We comment on the relevance of our results for inelastic neutron-scattering experiments on quasi-1D materials. ©2005 The American Physical Society. |
| spellingShingle | Bhaseen, M Essler, F Grage, A Itinerancy effects on spin correlations in one-dimensional Mott insulators |
| title | Itinerancy effects on spin correlations in one-dimensional Mott insulators |
| title_full | Itinerancy effects on spin correlations in one-dimensional Mott insulators |
| title_fullStr | Itinerancy effects on spin correlations in one-dimensional Mott insulators |
| title_full_unstemmed | Itinerancy effects on spin correlations in one-dimensional Mott insulators |
| title_short | Itinerancy effects on spin correlations in one-dimensional Mott insulators |
| title_sort | itinerancy effects on spin correlations in one dimensional mott insulators |
| work_keys_str_mv | AT bhaseenm itinerancyeffectsonspincorrelationsinonedimensionalmottinsulators AT esslerf itinerancyeffectsonspincorrelationsinonedimensionalmottinsulators AT gragea itinerancyeffectsonspincorrelationsinonedimensionalmottinsulators |