Magnetic coupled spin-torque devices for nonvolatile logic applications

The magnetic coupled spin-torque device (MCSTD) is a new spintronics device architecture that is free from the difficulties in spin transport and spin detection. It uses spin-torque transfer technique and magnetic coupling to modulate its energy barrier. Requirements for logic device: fast switching speed, inherent gain, inversion capability, and spin interconnection techniques of MCSTD are presented. Logic functionalities such as NAND, NOR, and NOT are successfully demonstrated in micromagnetics simulations. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3056141]