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  Microscopic manipulation of ferroelectric domains in SnSe monolayers at room temperature

Chang, K., Küster, F., Miller, B. J., Ji, J.-R., Zhang, J.-L., Sessi, P., et al. (2020). Microscopic manipulation of ferroelectric domains in SnSe monolayers at room temperature. Nano Letters, 20(9), 6590-6597. doi:10.1021/acs.nanolett.0c02357.

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acs.nanolett.0c02357.pdf (Publisher version), 9MB
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https://doi.org/10.1021/acs.nanolett.0c02357 (Publisher version)
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 Creators:
Chang, Kai1, Author
Küster, Felix1, Author              
Miller, Brandon J.2, Author
Ji, Jing-Rong1, Author              
Zhang, Jia-Lu1, Author
Sessi, Paolo1, Author              
Barraz-Lopez, Salvador2, Author
Parkin, Stuart S. P.1, Author              
Affiliations:
1Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society, ou_3287476              
2External Organizations, ou_persistent22              

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 Abstract: Two-dimensional (2D) van der Waals ferroelectrics provide an unprecedented architectural freedom for the creation of artificial multiferroics and nonvolatile electronic devices based on vertical and coplanar heterojunctions of 2D ferroic materials. Nevertheless, controlled microscopic manipulation of ferroelectric domains is still rare in monolayer-thick 2D ferroelectrics with in-plane polarization. Here we report the discovery of robust ferroelectricity with a critical temperature close to 400 K in SnSe monolayer plates grown on graphene and the demonstration of controlled room-temperature ferroelectric domain manipulation by applying appropriate bias voltage pulses to the tip of a scanning tunneling microscope (STM). This study shows that STM is a powerful tool for detecting and manipulating the microscopic domain structures in 2D ferroelectric monolayers, which are difficult for conventional approaches such as piezoresponse force microscopy, thus facilitating the hunt for other 2D ferroelectric monolayers with in-plane polarization with important technological applications.

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 Dates: 2020-08-18
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: P13985
DOI: 10.1021/acs.nanolett.0c02357
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Title: Nano Letters
  Abbreviation : Nano Lett.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 20 (9) Sequence Number: - Start / End Page: 6590 - 6597 Identifier: ISSN: 1530-6984
CoNE: https://pure.mpg.de/cone/journals/resource/110978984570403