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

被引：112

作者：

Zwick, F ^{[1
]}

Jerome, D

Margaritondo, G

Onellion, M

Voit, J

Grioni, M

机构：

[1] Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland

[2] Univ Paris Sud, Phys Solides Lab, F-91405 Orsay, France

[3] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[4] Univ Bayreuth, D-95440 Bayreuth, Germany

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.81.2974

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：2974 / 2977

页数：4

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