Lee, Mi Jung Lee, Sangik Lee, Sungmin Balamurugan, K. Yoon, Chansoo Jang, Jun Tae Kim, Sung-Hoon Kwon, Deok-Hwang Kim, Miyoung Ahn, Jae-Pyoung Kim, Dae Hwan Park, Je-Geun Park, Bae Ho 2024-01-19T23:02:06Z 2024-01-19T23:02:06Z 2021-09-03 2018-04-02 1884-4049 https://pubs.kist.re.kr/handle/201004/121496 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 similar to 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. English NATURE PUBLISHING GROUP PLASTICITY SWITCHES IMPACT FILM Synaptic devices based on two-dimensional layered single-crystal chromium thiophosphate (CrPS4) Article 10.1038/s41427-018-0016-7 1 NPG ASIA MATERIALS, v.10 NPG ASIA MATERIALS 10 scie scopus 000438886800002 2-s2.0-85044718711 Materials Science, Multidisciplinary Materials Science Article PLASTICITY SWITCHES IMPACT FILM