Magnetic field dependent and induced ground states in organic conductors

We consider in this report the subject of magnetic field induced transitions and magnetic field effects involving broken symmetry (density wave) ground states in organic conductors. In the most primitive case, the magnetic field can induce a gapped, spin density wave ground state starting from a simple quasi-one-dimensional organic metal. An understanding of this mechanism forms the basis to explore phenomena that arise in more complex systems involving multiple bands, including quasi-two-dimensional configurations. In many cases there are pre-existing density wave states upon which the magnetic field can act through Zeeman and orbital mechanisms, resulting in new high field phases. The magnetic field plays a second role in understanding field induced changes in the electronic structure through Fermiology and other novel magnetotransport methods