Analysis of a spin-transfer torque based copy operation of a buffered magnetic processing environment

摘要

The static power dissipation and the communication bandwidth between memory and processors have become performance limiting bottlenecks for modern computer systems. The introduction of certain nonvolatile devices, i.e. magnetic tunnel junctions (MTJ), enables the realization of fast zero standby power and instant-on CMOS/MTJ hybrids. However, these solutions still cannot compete with pure CMOS circuits in one of the key aspects, namely integration density. In order to circumvent this limitation, we suggested to move as much as possible of the CMOS functionality into the magnetic domain. As a result, we proposed a nonvolatile magnetic processing environment where information encoded spin-transfer torques perform instructions. In this work we investigate the copy operation which is essential for the magnetic processing environment. In particular, we analyze geometry dependences and misalignment issues for the fabrication process.