MAGNETIC-FIELD STUDIES OF THE PECULIAR ELECTRONIC-STATE IN THE ALPHA-(BEDT-TTF)(2)MHG(SCN)(4) FAMILY

Magnetoresistance anomalies exhibited by the members of the alpha-(BED T-TTF)(2)MHg(SCN)(4) family with M=Tl, K and Rb are reviewed in connec tion with possible modification of their electronic structure at low t emperatures. Special attention is paid to angular magnetoresistance os cillations (AMRO). The analysis of the AMRO behavior at various temper atures and magnetic fields, both below and above the phase transition temperature, enables us to get an important information about changes in the electronic band structure at the phase transition. Other peculi arities of both semi-classical magnetoresistance and quantum oscillati ons are discussed within the proposed model of the law-temperature sta te of these compounds.