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

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 k(F) in this material, and the observation of the opening of a Peierls gap in the low-temperature charge density wave phase.


Published in:
Physical Review Letters, 81, 14, 2974-2977
Year:
1998
ISSN:
0031-9007
Keywords:
Note:
Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland. Univ Paris Sud, Phys Solides Lab, F-91405 Orsay, France. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Univ Bayreuth, D-95440 Bayreuth, Germany. Zwick, F, Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 125HR
Laboratories:




 Record created 2006-10-03, last modified 2018-01-27


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