Absence of quasiparticles in the photoemission spectra of quasi-one-dimensional Bechgaard salts

Zwick, F.Brown, S.Margaritondo, G.Merlic, C.Onellion, M.Voit, J.Grioni, M.2006-10-032006-10-032006-10-03199710.1103/PhysRevLett.79.3982https://infoscience.epfl.ch/handle/20.500.14299/234758WOS:A1997YF78600046We measured typical quasi-one-dimensional organic metals (Bechgaard salts), using high resolution angle-resolved photoemission spectroscopy. We observe neither quasiparticle features near the chemical potential nor traces of a Fermi surface. The spectra, indicating a deep pseudogap around the Fermi energy, are incompatible with a Fermi liquid picture. None of the alternative interpretations we explored can fully explain the experimental data.METAL-INSULATOR-TRANSITIONLUTTINGER-LIQUID BEHAVIORFERMI-LIQUIDORGANIC CONDUCTORSSUPERCONDUCTORS(TMTSF)(2)PF6SPECTROSCOPYSEPARATIONMODELAbsence of quasiparticles in the photoemission spectra of quasi-one-dimensional Bechgaard saltstext::journal::journal article::research article