Colossal magnetoresistance and anomalous Hall effect in nonmagnetic semiconductors

Sergei Obukhov, Tatiana Panysheva, N. Perov, A. Semisalova
2018 EPJ Web of Conferences  
Colossal Magnetoresistance (CMR) in nonmagnetic semiconductors and magnetic materials has been investigated as a function of magnetic field, charge carriers concentration and temperature. Both types of materials demonstrated qualitative and quantitative coincidence of CMR dependence on magnetic field, charge carriers concentration and temperature. The findings support the CMR interpretation in the framework of the Excitonic Insulator (EI) model and transition of an insulating EI phase to
more » ... EI phase to conducting state under magnetic field for all types of materials under study. It is suggested that Jahn-Teller distortion caused by magnetic ions and external uniaxial stress could initiate EI phase formation
doi:10.1051/epjconf/201818506011 fatcat:5n7hm2wn55hmdosf3c365iynke