Thermally Reliable Magnetostriction-Assisted All-Spin Domino-Logic Device

Recently, researchers have experimentally demonstrated the energy efficient 90⁰ voltage-mediated magnetic reorientation through changing the magnetoelastic energy, which couples the strain to the magnetization. We present a magnetic-piezoelectric heterostructure that utilizes 90⁰ magnetostrictive switching and 90⁰ spin-transfer torque (STT) switching to perform magnetization reversal. The device relies on the switching from the saddle point of energy profile, demonstrated to be more delay and energy efficient and robust to thermal noise. The operation and the physics of the device are studied to benchmark its performance against other spintronic and CMOS devices. Compared to the all-spin logic device, the proposed device has achieved 14× shorter delay and 19× lower energy dissipation for implementation of a 32-bit arithmetic-logic unit, while maintaining low-voltage operation, non-reciprocity, non-volatility, cascadability, and thermal reliability. Moreover, several magnetic and piezoelectric materials are studied to investigate the best candidate materials to implement the proposed device.