Molecular (Super) Conductors

Dear Colleagues,

Fifty years after their discovery, the field of molecular conductors still remains very rich, thanks to the ability of the chemistry community to create new materials by fine-tuning the interactions between molecules with delocalized pi-electrons. The phase diagrams of these crystalline materials exhibit a wealth of ground states; some of them were not imagined at that time, nor observed before, in inorganic materials: superconductivity, Mott insulator, charge order insulator, spin liquids, chiral states, multiferroicity, and Dirac cones, for instance. These various properties interplay very often as a function of pressure, gate doping, light or the magnetic field. They may lead to inhomogeneous states at the border of metal-insulator phase transition, or near quantum critical points. However, forty years after the discovery of superconductivity in a molecular conductor, the question of its origin is not yet clear.

The purity of the available single crystals turns the molecular conductors into model systems in condensed matter physics for experimentalists, and theoreticians as well. They offer a rich playground for studying the role and the competition of lattice, charge and orbital degrees of freedom, thanks to the softness of the underlying structure and the ability of chemists to introduce specific functions on the molecules.

This Special Issue on molecular (super)conductors follows the two previous ones edited by Reizo Kato, in 2012, with 45 contributions on various aspects of “Molecular Conductors”, and Martin Dressel, in 2018, with 19 contributions on “Advances in Organic Conductors and Superconductors”, which both had a large impact. This Special Issue reports on new achievements in the field within the last three years.

Prof. Dr. Claude Pasquier
Guest Editor

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• Synthesis of molecules
• Electrocrystallization (or crystal growth)
• Charge transfer salts
• Single molecule materials
• Chiral materials
• Low dimensionality
• Superconductivity
• Dirac cones
• Strongly correlated electron systems
• Mott transition
• Charge order
• Spin liquids
• Ferroelectricity
• Disorder effects
• High Pressure
• X-ray diffraction
• Photo-induced transition
• Thermodynamic properties
• Electrical properties
• Thermal properties
• Dielectric properties
• Optical properties
• Spectroscopic techniques (NMR, ESR, Raman, STM…)
• Dynamical mean field theory
• Ab-initio calculations
• Numerical techniques
• Theoretical models