Study of current induced magnetic domain wall movement with extremely low energy consumption by micromagnetic simulation

Abstract

We study the velocity and energy consumption of current induced magnetic domain wall (DW) movement, which is a new paradigm in spintronics devices such as a next generation MRAM and race track memory, by LLG (Landau-Lifshitz-Gilbert) micromagnetic simulation. It is found that DW velocity is almost the same in current in magnetic thin film plane(CIP) and current perpendicular to plane (CPP-Perp.). On the other hand, the energy consumption is much lower in CPP-Perp. than CIP. These results show that the CPP-Perp. structure has potential solutions for high speed and low energy consumption applications.