All spin logic device (ASLD) blazes an alternative path for realizing ultra-low power computing in the Post-Moore era. However, initial device structure relying on ferromagnetic input/output and spin transfer torque (STT) driven magnetization switching degrades its performance and even hinders its realization. In this paper, we propose an ASLD based on rare-earth (RE)-transition-metal (TM) ferromagnetic alloy that can achieve an ultra-high frequency up to terahertz. The spin orbit torque (SOT) induced fast precession near the spin angular momentum compensated point is investigated through the macrospin model. Combining the non-local spin current diffusing from the input to the output, a deterministic picosecond switching can be realized without any external magnetic field. Our results show that ASLD has the potential to exceed the performance of mainstream computing.
@article{arxiv.1803.02552,
title = {Ultra-Fast Ferrimagnetic All Spin Logic Device},
author = {Yue Zhang and Zhizhong Zhang and Zhenyi Zheng and Jiang Nan and Guanda Wang and Kun Zhang and Yu Wang and Wei Yun and Youguang Zhang and Weisheng Zhao},
journal= {arXiv preprint arXiv:1803.02552},
year = {2018}
}