Abstract
The absence of spectral weight at the Fermi level in photoemission spectra of quasi-1D organic conductors has been interpreted as possible evidence for an unusual many-body state. We demonstrate that great care must be exercised to draw this conclusion exclusively on the basis of a pseudogap. A detailed surface characterization of the charge transfer salts (TMTSF)(2)PFt(6) and TTF-TCNQ shows that signatures of electronic correlations in the valence band spectra are strongly affected by surface effects and may even be completely obscured.
Original language | English |
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Journal | Physica b-condensed matter |
Volume | 312 |
Pages (from-to) | 660-662 |
ISSN | 0921-4526 |
Publication status | Published - 2002 |