Synaptic devices based on two-dimensional layered single-crystal chromium thiophosphate (CrPS4)

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Title
Synaptic devices based on two-dimensional layered single-crystal chromium thiophosphate (CrPS4)
Author(s)
Mi Jung Lee; SangikLee; Sungmin Lee; K. Balamurugan; Chansoo Yoon; Jun Tae Jang; Sung-HoonKim; Deok-Hwang Kwon; Miyoung Kim; Jae-PyoungAhn; Park, Je Geun; Dae Hwan Kim; Bae Ho Park
Publication Date
2018-04
Journal
NPG Asia Materials, v.10, no.4, pp.23 - 30
Publisher
NATURE PUBLISHING GROUP
Abstract
Two-dimensional (2D) van der Waals (vdW) materials have recently attracted considerable attention due to their excellent electrical and mechanical properties. TmPSx (where Tm = a transition metal), which is a new class of 2D vdW materials, is expected to show various physical phenomena depending on the Tm used. In this paper, the unprecedented synaptic behavior of a vertical Ag/CrPS4/Au capacitor structure, where CrPS4 is a single-crystalline 2D vdW layer, is reported. Multi-stable resistive states were obtained using an external voltage of less than 0.3 V. Both short-term plasticity and long-term potentiation were observed by controlling the interval of the external voltage pulse. Simple mechanical exfoliation was used to develop a synaptic device based on a very thin CrPS4 layer with a thickness of ~17 nm. Therefore, it was demonstrated that vertical Ag/CrPS4/Au capacitors could be promising inorganic synaptic devices compatible with next-generation, flexible neuromorphic technologies. © The Author(s) 2018
URI
https://pr.ibs.re.kr/handle/8788114/5791
ISSN
1884-4057
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
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2018-247_Synaptic devices implemented with two-dimensional layered single crystal chromium thiophosphate (CrPS4).pdfDownload

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