1. Scalability Prospect of Three-Terminal Magnetic Domain-Wall Motion Device
- Author
-
N. Ishiwata, Naoki Kasai, Shoji Ikeda, Shunsuke Fukami, Michihiko Yamanouchi, Hiroki Sato, and Hideo Ohno
- Subjects
Physics ,Magnetic domain ,business.industry ,Magnetic storage ,Topology ,Electronic, Optical and Magnetic Materials ,law.invention ,Non-volatile memory ,Switching time ,Domain wall (magnetism) ,law ,Computer data storage ,Limiter ,Electrical and Electronic Engineering ,business ,Scaling - Abstract
We studied a scaling property of a three-terminal domain wall (DW)-motion device, which is one of the promising candidates for future low-power nonvolatile memory and logic-in-memory architecture. Using several assumptions, we derived the scaling factor of the switching current, switching time, resistance of the write-current path, and data storage stability. We also quantitatively evaluated the variation of these parameters with the device size. It was found that the switching current and time decrease almost linearly with the device size, while the variation of the resistance of the write-current path is negligible. The switching current and time for 32-nm-wide device are less than 100 μA and 2 ns, respectively. A required critical field which assures a sufficient thermal stability of stored data was calculated for each generation. Furthermore, future issues and intrinsic limiter for the size reduction were discussed.
- Published
- 2012
- Full Text
- View/download PDF