2002/01/30 by R. Claessen, M. Sing, U. Schwingenschloegl +7
Engineering · Materials Science · Physics and Astronomy · #Molecular Junctions and Nanostructures #Organic and Molecular Conductors Research #Quantum and electron transport phenomena #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.88.096402
published as Phys. Rev. Lett. 88, 096402 (2002) · 4 pages, 4 figures; to appear in PRL
arxiv created 2002/01/30 · openalex publication_date 2002/02/13 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The electronic structure of the quasi-one-dimensional organic conductor TTF-TCNQ is studied by angle-resolved photoelectron spectroscopy (ARPES). The experimental spectra reveal significant discrepancies to band theory. We demonstrate that the measured dispersions can be consistently mapped onto the one-dimensional Hubbard model at finite doping. This interpretation is further supported by a remarkable transfer of spectral weight as a function of temperature. The ARPES data thus show spectroscopic signatures of spin-charge separation on an energy scale of the conduction bandwidth.