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research article
Unusual Photoemission Spectral-Function Of Quasi-One-Dimensional Metals
We have carried out high-resolution photoemission experiments on two quasi-one-dimensional compounds: K0.3MoO3 and (TaSe4)2I. In both systems, a metal-insulator transition associated with a lattice distortion is reported. We show that the Fermi-step characteristic of a metallic phase is not observed above the Peierls temperature. As this Fermi step is always observed in higher-dimensional metals, we propose that this behavior results from the singular properties of one-dimensional systems and we suggest different mechanisms in order to explain this striking result.
Type
research article
Authors
Publication date
1991
Publisher
Published in
Volume
67
Start page
3144
End page
3147
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
April 7, 2010
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