Material engineering and emergent phenomena in correlated quasi-two-dimensional organic compounds. An attempt to unite phase diagrams for BEDT-TTF and DOEO families
Dr. Andrey A. Bardin (Institute of Problems of Chemical Physics, Russian Academy of Sciences Moscow)

Current progress in the field of strongly correlated organic single crystalline conductors rises important questions concerning real structure of the materials under investigation. The ideal crystal structure is of crucial importance to uncover charge transport basics, construct the band structure and evaluate magnetic properties of the materials. However, further and deeper insight into the peculiarities and observed anomalies of the solids requires sufficient advances in their real structure. It becomes especially important in the cases of the materials where strong electronic correlations play major role in the transport properties and in the complex structures that readily accept a variety of crystal imperfections or/and strongly affected by twinning and high crystal mosaicity. Nevertheless, manipulations with the real structure may serve as a versatile tool for smooth and controllable material modifications towards desired properties. In the particular cases of some superconductors and Mott insulators where even a low level of disorder can considerably shift or damp phase transition this technique allow an investigator to scan phase space in the close proximity of critical point, providing thus, a tool for building of the complete phase diagram. In this talk I discuss aforementioned issues and opportunities provided by real structure control on the bases of recent achievements in our laboratory. The cases of famous BEDT-TTF κ-salts those demonstrate “high-Tc” (Tc > 10 K) and spin liquid states and less developed salts of DOEO and BDH-TTP will be discussed.