New non-Fermi liquid type behavior given by a two-band system in normal phase
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2001
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| _version_ | 1866912290749546496 |
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| author | Gulacsi, Zs. Orlik, I. |
| author_facet | Gulacsi, Zs. Orlik, I. |
| contents | We are reporting a new non-Fermi liquid type normal phase that has a well defined Fermi energy, but without showing any non-regularity in the momentum distribution function in the whole momentum space, the sharp Fermi momentum concept being undefinable. The system contains a natural built in gap that is visible in the physical properties of the system at nonzero temperatures. The presence of a flat band in multiband interacting Fermi systems with more than half filling is the key feature leading to such a ground state, which is not restricted to one spatial dimension and emerges in the proximity of an insulating phase. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_cond_mat_0105399 |
| institution | arXiv |
| publishDate | 2001 |
| record_format | arxiv |
| spellingShingle | New non-Fermi liquid type behavior given by a two-band system in normal phase Gulacsi, Zs. Orlik, I. Strongly Correlated Electrons We are reporting a new non-Fermi liquid type normal phase that has a well defined Fermi energy, but without showing any non-regularity in the momentum distribution function in the whole momentum space, the sharp Fermi momentum concept being undefinable. The system contains a natural built in gap that is visible in the physical properties of the system at nonzero temperatures. The presence of a flat band in multiband interacting Fermi systems with more than half filling is the key feature leading to such a ground state, which is not restricted to one spatial dimension and emerges in the proximity of an insulating phase. |
| title | New non-Fermi liquid type behavior given by a two-band system in normal phase |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/cond-mat/0105399 |