Harnessing Valley-Spin Hall Effect in WSe2 for Energy-Efficient Logic-Memory Integration

Sumeet Kumar Gupta; Karam Cho

doi:10.1117/12.3028292

4 October 2024 Harnessing valley-spin Hall effect in WSe₂ for energy-efficient logic-memory integration

Sumeet Kumar Gupta, Karam Cho

Author Affiliations +

Proceedings Volume 13119, Spintronics XVII; 1311904 (2024) https://doi.org/10.1117/12.3028292
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

We present non-volatile memory (NVM) devices based on valley-spin hall effect (VSHE) in monolayer WSe2 and discuss how we utilize their unique properties for logic-memory integration in two applications: (i) compact and low power crossbar arrays capable of performing matrix-vector multiplications for binary neural networks (computing integrated within a memory macro) and (ii) energy-efficient non-volatile flip-flops (NVM integrated in logic) for energy autonomous systems. We discuss the appealing attributes of the VSHE-devices enabled by coupling WSe₂ with perpendicular magnetic anisotropy (PMA) magnets and show their utility in mitigating the design conflicts of memory devices. We show how the true and complementary bit-storage along with the integrated back gate of VSHE-devices enable the design of compact and low power compute-enabled NVM arrays for binary neural networks. Further, we utilize the VSHE-devices to design non-volatile flip-flops, which feature low power data backup (by virtue of VSHE-based write) and robust restore operation (due to differential data storage in a single VSHE-device).

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Sumeet Kumar Gupta and Karam Cho "Harnessing valley-spin Hall effect in WSe₂ for energy-efficient logic-memory integration", Proc. SPIE 13119, Spintronics XVII, 1311904 (4 October 2024); https://doi.org/10.1117/12.3028292

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE