A fluorite-structured HfO<sub>2</sub>/ZrO<sub>2</sub>/HfO<sub>2</sub> superlattice based self-rectifying ferroelectric tunnel junction synapse
Dong Hyun Lee, Ji Eun Kim, Yong Hyeon Cho, Sojin Kim, Geun Hyeong Park, Hyojun Choi, Sun Young Lee, Sun Young Lee, Taegyu Kwon, Da Hyun Kim, Moonseek Jeong, Hyun Woo Jeong, Young-Hwan Lee, Seung‐Yong Lee, Seung‐Yong Lee, Jung Ho Yoon, Min Hyuk Park
Abstract
/Pt interfaces enable a self-rectifying property with a rectifying ratio of 1550. Through calculations and simulations it is found that the device demonstrates potential for achieving an integrated array size exceeding 7k while maintaining a 10% read margin, and shows potential for application in artificial synapses for neuromorphic computing with an image recognition accuracy above 92%. Finally, the self-rectifying behavior and device-to-device variation reliability are confirmed in a 9 × 9 crossbar array structure.