Correlation versus surface effects in photoemission of quasi-1D organic conductors

R. Claessen, U. Schwingenschlogl, M. Sing, Claus Schelde Jacobsen, M. Dressel

Research output: Contribution to journalJournal articleResearchpeer-review

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 languageEnglish
JournalPhysica b-condensed matter
Volume312
Pages (from-to)660-662
ISSN0921-4526
Publication statusPublished - 2002

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