Recent progress in random number generator using voltage pulse-induced switching of nano-magnet: A perspective

摘要: Voltage pulse-driven switching of nano-magnets has gained distinct attention because its high-speed writing with ultralow power consumption. One the key advantages is that external voltage applied to a nano-magnet reduces magnetic anisotropy energy and excites precessional motion magnetization. By adjusting duration amplitude pulse, probability close 50% can be attained, suggesting state used as source for generating binary random numbers (RNs) in principle. Because bi-directional induced by unipolar pulses, which essentially different from case spin transfer torque (STT) switching, results are mixture two polarities: parallel (“0” state) antiparallel (“1” vice versa. Here, we focus our on appearance probabilities four cases, “00,” “01,” “10,” “11,” all change linearly functions voltage. tuning “00” or “11” 25%, well-balanced RNs generated. A clear advantage voltage-pulse driven number generator (RNG) over conventional STT-driven one lower consumption, enables integration heavily operations large RNGs.