Room-temperature large photoinduced magnetoresistance in semi-insulating gallium arsenide-based device*

Project supported by the National Natural Science Foundation of China (Grant Nos. 11574243 and 11174231).

He Xiong, Sun Zhi-Gang
       

(color online) (a) VI characteristic curve of the In/n-GaAs/In device under different magnetic fields and 4-LEDs intensity of illumination, with inset showing magnified part of the curves. (b) Calculated MR–I and SI curves under 1 T.