Magnetic-field-induced superconductivity in organic conductors

For conventional superconductors, superconductivity is destabilized by magnetic field. However, in BETS-based two dimensional organic conductors, where BETS is bis(ethylenedithio)tetraselenafulvalene, superconductivity is induced by high magnetic fields parallel to the conducting layers. The overall features of the field-induced superconductivity are well understood in terms of Jaccarino-Peter compensation mechanism, where the magnetic interaction between the conduction electrons on the BETS molecules and the localized magnetic moments in the insulating layers plays a crucial role. The experimental results of the field induced superconductivity observed in the BETS systems and the theoretical model are reviewed.