Magneto-current Study in a Silicon Base Spin Valve Transistor

The magneto-current (MC) of the collector in a silicon base spin valve transistor (SVT) has been studied with both experiments and computer calculations. Two spin valve transistors of different sizes were fabricated, and the base resistor (RB) was applied to the measurement circuit to replace the base bias (VB). The MC ratios of the collector current (IC) can be kept near its maximum value when the emitter bias (VE) changes several volts for the suitable RBs in the experiment, and the results are very close to those of the calculations of computer.