Article Dans Une Revue Physical Review Letters Année : 1998

Band mapping and quasiparticle suppression in the one-dimensional organic conductor TTF-TCNQ

Résumé

Dispersing 1D bands have been observed for the first time in an organic conductor by high resolution photoemission experiments on TTF-TCNQ (tetrathiafulvalene-tetracyanoquinodimethane). Their properties are extremely unusual: the bandwidth is much larger than traditional estimates, and the quasiparticle states are strongly renormalized, with no weight at the chemical potential. A deep pseudogap around the Fermi energy persists, and even increases, up to room temperature. We also report a direct determination of kF in this material, and the observation of the opening of a Peierls gap in the low-temperature charge density wave phase.

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hal-04944343 , version 1 (24-02-2025)

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F. Zwick, D. Jérome, G. Margaritondo, M. Onellion, J. Voit, et al.. Band mapping and quasiparticle suppression in the one-dimensional organic conductor TTF-TCNQ. Physical Review Letters, 1998, 81 (14), pp.2974-2977. ⟨10.1103/PhysRevLett.81.2974⟩. ⟨hal-04944343⟩
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