Surface characterization and surface electronic structure of organic quasi-one-dimensional charge transfer salts

M. Sing, U. Schwingenschlögl, R. Claessen, M. Dressel, and C. S. Jacobsen
Phys. Rev. B 67, 125402 – Published 5 March 2003
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Abstract

We have thoroughly characterized the surfaces of the organic charge-transfer salts TTF-TCNQ and (TMTSF)2PF6 which are generally acknowledged as prototypical examples of one-dimensional conductors. In particular x-ray-induced photoemission spectroscopy turns out to be a valuable nondestructive diagnostic tool. We show that the observation of generic one-dimensional signatures in photoemission spectra of the valence band close to the Fermi level can be strongly affected by surface effects. Especially, great care must be exercised taking evidence for an unusual one-dimensional many-body state exclusively from the observation of a pseudogap.

  • Received 9 September 2002

DOI:https://doi.org/10.1103/PhysRevB.67.125402

©2003 American Physical Society

Authors & Affiliations

M. Sing*, U. Schwingenschlögl, and R. Claessen

  • Institut für Physik, Experimentalphysik II, Universität Augsburg, D-86135 Augsburg, Germany

M. Dressel

  • 1. Physikalisches Institut, Universität Stuttgart, D-70550 Stuttgart, Germany

C. S. Jacobsen

  • Department of Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark

  • *Electronic address: sing@physik.uni-augsburg.de

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Vol. 67, Iss. 12 — 15 March 2003

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