Effect of charge carrier's localization on spin dynamics in magnetic sublattice of charge transfer salts
Prof. Roman Morgunov (Laboratory of Magnetochemistry and Spin Dynamics, Institute of Problems of Chemical Physics, Russian Academy of Sciences)

Series of BEDT-TTF, BEDO and BETS based charge transfer compounds containing magnetic sublattices of transition metals (Cr, Mn, Fe etc.) were studied. Interplay between magnetic and charge transfer sublattices is a main subject of the work. Most of the compounds possessed localization of charge carriers (Mott, Anderson and other kind of localizations will be considered). Spin dynamics in magnetic sublayers of the compounds serves as an echo of the electron localization in conductive layers. Strong electron-electron correlation in two dimensional conductive layers provides structurally and magnetically sensitive cooperation of the charge carriers. Low temperature measurements of the ESR signal and SQUID magnetic moment allowed to distinguish contribusions of the charge carriers and magnetic ions to the magnetic properties. Antiferromagnetic, ferromagnetic spin correlations as well as spin frustrated glass magnetic states are dependent on charge carriers localization. Contribution of the charge carriers to the exchange interaction and correlation magnetic and electrical properties of the compounds will be considered.