Effective Field Study of Canted Antiferromagnetic Insulating Phase in Magnetic Organic Conductor [lamda]-(BETS)^sub 2^FeCl^sub 4^ through Specific Heat Measurement

The relationship between magnetism and superconductivity has been intensively studied by many researchers. The organic conductor ...-(BETS)2FeCl4 [BETS = bis(ethylenedithio)tetraselenafulvalene] undergoes a metal-insulator (M-I) transition with antiferromagnetic (AF) ordering under zero magnetic field. The magnetic field (...0H ~ 11 T) induces the transition from the insulating state to the metallic state and then to the superconducting state (...0H ~ 17 T). The origin and mechanism of the M-I transition accompanying AF ordering have not been clarified yet. In the present study, to investigate the origin and mechanism of the M-I and AF transitions in ...-(BETS)2FeCl4, we derived key information on these phase transitions by studying the effective magnetic field on an FeCl4 site through specific heat measurements under a magnetic field. (ProQuest: ... denotes formulae/symbols omitted.)