[F-7] In-Memory and Unconventional Computing

[F-7-03] FeFET Reservoir with Four-Terminal Operation for Efficient and Flexible Reservoir Computing Hardware

〇Kasidit Toprasertpong^1,2, Eishin Nako¹, Zeyu Wang¹, Ryosho Nakane¹, Mitsuru Takenaka¹, Shinichi Takagi¹ (1. Univ. of Tokyo (Japan), 2. Stanford Univ. (United States of America))

Presentation style: On-site (in-person)

https://doi.org/10.7567/SSDM.2022.F-7-03

We explore the potential of the four-terminal operation scheme of the FeFET reservoir in FeFET-based reservoir computing. By reading out the current waveforms from the drain, source, and substrate to form the reservoir state, the computing performance is significantly improved compared to the previous operation scheme using only the drain current. This reservoir computing scheme can well predict the output sequence of the second-order nonlinear dynamical system with a low prediction error. The four-terminal feature of FeFETs also provides the capability to fine-tune the reservoir state for flexible reservoir computing hardware.