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research article
Remnant fermi surface in the presence of an underlying instability in layered 1T-TaS2
We report high resolution angle-scanned photoemission and Fermi surface (FS) mapping experiments on the layered transition-metal dichalcogenide 1T-TaS2 in the quasicommensurate (metallic) and the commensurate (insulating) charge-density-wave (CDW) phase. Instead of a nesting induced partially removed FS in the CDW phase we find a pseudogap over large portions of the FS. This remnant FS exhibits the symmetry of the one-particle normal state FS. Possibly, this Mott localization induced transition represents the underlying instability responsible fur the pseudogapped FS.
Type
research article
Authors
Publication date
1999
Publisher
Published in
Volume
83
Start page
3494
End page
3497
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
April 7, 2010
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