BROWSE

Related Scientist

kangsik,kim's photo.

kangsik,kim
다차원탄소재료연구단
more info

ITEM VIEW & DOWNLOAD

Understanding Interface-Controlled Resistance Drift in Superlattice Phase Change Memory

Cited 0 time in webofscience Cited 0 time in scopus
191 Viewed 0 Downloaded
Title
Understanding Interface-Controlled Resistance Drift in Superlattice Phase Change Memory
Author(s)
Wu, Xiangjin; Khan, Asir Intisar; Ramesh, Pranav; Perez, Christopher; Kangsik Kim; Zonghoon Lee; Saraswat, Krishna; Goodson, Kenneth E.; Philip, Wong H.-S.; Pop, Eric
Publication Date
2022-10
Journal
IEEE Electron Device Letters, v.43, no.10, pp.1669 - 1672
Publisher
Institute of Electrical and Electronics Engineers Inc.
Abstract
© 1980-2012 IEEE.Resistance drift in phase change memory (PCM) reduces the accuracy of analog computing applications such as neural network inference. Recently, PCMs based on superlattice (SL) phase change layers have shown low resistance drift, however the origin of this low drift remains unexplored. Here, we uncover that resistance drift in SL-PCM based on alternating layers of Sb2Te3 and Ge2Sb2Te5 (GST) is controlled by the number of SL interfaces as well as the degree of SL intermixing. Temperature-dependent measurements reveal smaller and more stable activation energy upon annealing (thus suppressed structural relaxation) in our SL-PCM vs. control GST devices, accounting for the low resistance drift. By controlling SL interfaces, we achieve low resistance drift coefficient v < 0.01 in these SL-PCMs, maintained after extensive cycling and at various read voltages and intervals - showing robustness required for analog computing with PCM.
URI
https://pr.ibs.re.kr/handle/8788114/12701
DOI
10.1109/LED.2022.3203971
ISSN
0741-3106
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse