DOI: 10.1002/advs.202100713. Atomic Imaging of Electrically Switchable Striped Domains in β′‐In2Se3

Atomic Imaging of Electrically Switchable Striped Domains in β′‐In2Se3

10.1002/advs.202100713

Crossref journal-article

Wiley

Advanced Science (311)

Abstract

Abstract2D ferroelectricity in van‐der‐Waals‐stacked materials such as indium selenide (In2Se3) has attracted interests because the ferroelectricity is robust even in ultrathin layers, which is useful for the miniaturization of ferroelectric field effect transistors. To implement In2Se3 in nanoscale ferroelectric devices, an understanding of the domain structure and switching dynamics in the 2D limit is essential. In this study, a biased scanning tunnelling microscopy (STM) tip is used to locally switch polarized domains in β′‐In2Se3, and the reconfiguration of these domains are directly visualized using STM. The room‐temperature surface of β′‐In2Se3 breaks into 1D nanostriped domains, which changes into a zig‐zag striped domains of β″ phase at low temperatures. These two types of domains can coexist, and by applying a tip‐sample bias, they can be interchangeably switched locally, showing volatile or nonvolatile like behavior depending on the threshold voltage applied. An atomic model is proposed to explain the switching mechanism based on tip‐induced flexoelectric effect and the ferroelastic switching between β′ and β″ phases.

Bibliography

Chen, Z., Fu, W., Wang, L., Yu, W., Li, H., Tan, C. K. Y., Abdelwahab, I., Shao, Y., Su, C., Sun, M., Huang, B., & Loh, K. P. (2021). Atomic Imaging of Electrically Switchable Striped Domains in Î²â²âIn2Se3. Advanced Science, 8(17). Portico.

Authors 12

Zhi Chen (first)
Wei Fu (additional)
Lin Wang (additional)
Wei Yu (additional)
Haohan Li (additional)
Clement Kok Yong Tan (additional)
Ibrahim Abdelwahab (additional)
Yan Shao (additional)
Chenliang Su (additional)
Mingzi Sun (additional)
Bolong Huang (additional)
Kian Ping Loh (additional)

References 22 Referenced 33

Dates

Type	When
Created	4 years, 1 month ago (July 2, 2021, 6:49 a.m.)
Deposited	1 year, 11 months ago (Aug. 25, 2023, 2:28 p.m.)
Indexed	3 weeks, 1 day ago (July 30, 2025, 3:44 a.m.)
Issued	4 years, 1 month ago (July 2, 2021)
Published	4 years, 1 month ago (July 2, 2021)
Published Online	4 years, 1 month ago (July 2, 2021)
Published Print	3 years, 11 months ago (Sept. 1, 2021)

Funders 1

Shenzhen Peacock Plan 10.13039/501100012234
Region: Asia
gov (Local government)
Labels1
1. Shenzhen Peacock Plan Team
Awards1
1. KQTD2016053112042971

BibTeX

@article{Chen_2021, title={Atomic Imaging of Electrically Switchable Striped Domains in β′‐In2Se3}, volume={8}, ISSN={2198-3844}, url={http://dx.doi.org/10.1002/advs.202100713}, DOI={10.1002/advs.202100713}, number={17}, journal={Advanced Science}, publisher={Wiley}, author={Chen, Zhi and Fu, Wei and Wang, Lin and Yu, Wei and Li, Haohan and Tan, Clement Kok Yong and Abdelwahab, Ibrahim and Shao, Yan and Su, Chenliang and Sun, Mingzi and Huang, Bolong and Loh, Kian Ping}, year={2021}, month=jul }

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