J. Phys. IV France
Volume 10, Numéro PR3, March 2000
Organic Superconductivity "20th Anniversary"
Page(s) Pr3-103 - Pr3-112
Organic Superconductivity "20th Anniversary"

J. Phys. IV France 10 (2000) Pr3-103-Pr3-112

DOI: 10.1051/jp4:2000310

Optical properties of low-dimensional systems : The Bechgaard salts case

L. Degiorgi1, V. Vescoli1, W. Henderson2, G. Gruner2 and L.K. Montgomery3

1  Laboratorium für Festkörperphysik, ETH Zurich, 8093 Zurich, Switzerland
2  Department of Physics, University of California at Los Angeles, Los Angeles, CA 90095-1547, U.S.A.
3  Department of Chemistry, University of Indiana, Bloomington, IN 47405, U.S.A.

We review our optical investigations on the organic Bechgaard salts. These prototype quasi-one dimensional systems reveal non-Fermi liquid features in their electrodynamic response. We show that various aspects of the exotic normal state properties along the chains are consistent with the predictions of the Tomonaga- Luttinger liquid theory or Luther-Emery model for one-dimensional systems. The role played by the interchain coupling will be also addressed.

© EDP Sciences 2000