2004/01/15 by T. Giamarchi, Thierry Giamarchi, Silke Biermann +5 · 1 citation
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:10.1051/jp4:2004114004
published as J. Phys. IV France 114, 23 (2004) · Proccedings of the ISCOM 2003 conference, Port-Bourgenay, Sept 2003; To be published in the Journal de Physique IV
arxiv created 2004/01/15 · openalex publication_date 2004/04/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
The Bechgaard salts are made of weakly coupled one dimensional chains. This particular structure gives the possibility to observe in these systems a dimensional crossover between a high temperature (or high energy) one dimensional phase and a two or three dimensional system. Since the filling of the chains is commensurate the system thus undergoes a deconfinement transition from a one dimensional Mott insulator to a two (or three) dimensional metal. Such a transition has of course a strong impact on the physical properties of these compounds, and is directly seen in transport measurements. In order to describe such a transition a dynamical mean field method has been introduced (chain-DMFT). Using this method we investigate a system of coupled Hubbard chains and show that we can indeed reproduce the deconfinement transition. This allows to determine physical quantities such as the transport transverse to the chains and the shape of the Fermi surface and quasiparticle residues in the low temperature phase