Anomalous temperature dependence of the single-particle spectrum in the organic conductor TTF-TCNQ
arXiv:cond-mat/0603098 · doi:10.1103/PhysRevB.74.113106
Abstract
The angle-resolved photoemission spectrum of the organic conductor TTF-TCNQ exhibits an unusual transfer of spectral weight over a wide energy range for temperatures 60K<T<260K. In order to investigate the origin of this finding, here we report numerical results on the single-particle spectral weight A(k,omega) for the one-dimensional (1D) Hubbard model and, in addition, for the 1D extended Hubbard and the 1D Hubbard-Holstein models. Comparisons with the photoemission data suggest that the 1D Hubbard model is not sufficient for explaining the unusual T dependence, and the long-range part of the Coulomb repulsion also needs to be included.
arXiv comment4 pages, 4 figures
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Cited by in corpus (5)
- Coulomb parameters and photoemission for the molecular metal TTF-TCNQ
- Spin, charge and single-particle spectral functions of the one-dimensional quarter filled Holstein model
- Are the renormalized band widths in TTF-TCNQ of structural or electronic origin? - An angular dependent NEXAFS study
- Spectral functions of two-band spinless fermion and single-band spin-1/2 fermion models
- The TTF finite-energy spectral features in photoemission of TTF-TCNQ: The Hubbard-chain description