Organic conductors and superconductors
Résumé
This review attempts to present the most salient developments of research on organic conductors and superconductors during the past 10 years. A theoretical introduction treats instabilities of quasi-one-dimensional electron systems and associated precursor effects which are relevant to the experimental results on organic conductors. We then describe the characterization of quasi-one-dimensional organic conductors by their transport, optical and magnetic properties. Finally, two sections are devoted to the experimental investigation of the tow temperature instabilities: lattice instability in TTF-TCNQ and related compounds, superconducting or antiferromagnetic instabilities in the (TMTSF)2X series. The importance of one-dimensional fluctuations is emphasized in both lattice and superconducting instabilities.
Mots clés
- Thermal effects
- Organic superconducting materials
- Superconducting instabilities
- Thermal expansion
- Phase transitions
- Paramagnetic resonance
- Optical properties
- Nuclear magnetic resonance
- Magnetic properties
- Ground state
- Electronic properties
- Electron transport properties
- Compressibility
- Characterization
- Bandwidth
- Antiferromagnetic materials
- Anisotropy
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