Reservoir computing with dipole-coupled nanomagnets. (11th June 2019)

• Record Type: Journal Article
• Authors: Nomura, Hikaru; Furuta, Taishi; Tsujimoto, Kazuki; Kuwabiraki, Yuki; Peper, Ferdinand; Tamura, Eiiti; Miwa, Shinji; Goto, Minori; Nakatani, Ryoichi; Suzuki, Yoshishige
• Is Part Of: Japanese journal of applied physics. Volume 58:Number 7(2019)
• Publication Date: 2019-06-11
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/1347-4065/ab2406
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: The feasibility of reservoir computing based on dipole-coupled nanomagnets is demonstrated using micro-magnetic simulations at 0 K. The static-magnetization directions of the nanomagnets are used as reservoir states. To update these states, we change the magnetization of one nanomagnet according to a single-bit-sequential input signal. We also change the uniaxial-anisotropy of the other nanomagnets using a voltage-induced magnetic anisotropy change to facilitate the flow of information, storage, and linear/nonlinear calculations. As a result, the reservoir computing output matrix was found to be trainable to perform AND/OR/XOR operations with an input delay of up to three bits.