Research Progress on Colossal Anisotropic Magnetoresistive Effect

Perovskite manganites show exotic functionalities due to the coupling between spin,charge,orbital and lattice,such as metal-insulator transition, colossal magnetoresistance(CMR),charge-orbital order and phase separation.Recently,an extraordinary anisotropic magnetoresistance(AMR) has been observed in perovskite manganite single crystals. The AMR value is about 2 orders larger than that of the conventional 3d transition metals and alloys, which is attributed to tunable metal-insulator transition temperature modulated by the magnetic field.This result provides a new route for exploring novel AMR materials and their applications.

Perovskite manganites show exotic functionalities due to the coupling between spin, charge, orbital and lattice, such as metal-insulator transition, colossal magnetoresistance （ CMR ） , charge-orbital order and phase separation. Recently, an extraordinary anisotropic magnetoresistance （ AMR ） has been observed in perovskite manganite single crystals. The AMR value is about 2 orders larger than that of the conventional 3E transition metals and alloys, which is attributed to tunable metal-insulator transition temperature modulated by the magnetic field. This result provides a new route for exploring novel AMR materials and their applications.