Charge Density Wave to Mixed Density Wave Phase Transition at High Fields in (Per)2M(mnt)2 (MÂ =Â Au, Pt)

The ground states of the quasi-one-dimensional organic metal (Per)2M(mnt)2 (where M = Au and Pt) were investigated by transport and magnetization measurements in magnetic fields of 33 and 45 tesla. The low field charge density wave transition temperature is suppressed by applied fields and a high field insulating state is introduced. We also report preliminary results of the effect of quasi-hydrostatic pressure on the charge density wave ground state and high field insulating state. The results will be discussed within the context of a contemporary model of high field density wave behavior.