Colossal Magnetoresistance in an Ultraclean Weakly Interacting 2D Fermi Liquid
Colossal Magnetoresistance in an Ultraclean Weakly Interacting 2D Fermi Liquid
We report the observation of a new phenomenon of colossal magnetoresistance in a 40 nm wide GaAs quantum well in the presence of an external magnetic field applied parallel to the high-mobility 2D electron layer. In a strong magnetic field, the magnetoresistance is observed to increase by a factor of …