Magnetic Coupled Spin-torque Devices and Magnetic Ring Oscillator

The Magnetic Coupled Spin-torque Device (MCSTD) is a new spintronics device architecture that is free from difficulties in spin transport and detection and uses spin torque transfer and magnetic coupling to modulate its energy barrier. Asymmetric energy barrier height ratios of 7:1 and spin current density reduction up to 40% are achieved. Device switching speed, inversion capability, fanout and new interconnection techniques are presented. NAND, NOR, NOT operations and a three stage MCSTD ring oscillator are demonstrated with micromagnetic simulations to estimate realistic device speed and power consumption.