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  Anomalous thickness dependence of Curie temperature in air-stable two-dimensional ferromagnetic 1T-CrTe2 grown by chemical vapor deposition

Meng, L., Zhou, Z., Xu, M., Yang, S., Si, K., Liu, L., et al. (2021). Anomalous thickness dependence of Curie temperature in air-stable two-dimensional ferromagnetic 1T-CrTe2 grown by chemical vapor deposition. Nature Communications, 12(1): 809. doi:10.1038/s41467-021-21072-z.

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Open Access. - This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
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https://dx.doi.org/10.1038/s41467-021-21072-z (Publisher version)
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 Creators:
Meng, L.1, 2, Author
Zhou, Z.3, Author
Xu, M.4, 5, Author
Yang, S.6, 7, Author
Si, K.1, Author
Liu, L.1, Author
Wang, X.1, Author
Jiang, H.1, Author
Li, B.1, 2, Author
Qin, P.1, Author
Zhang, P.1, Author
Wang, J.2, Author
Liu, Z.1, Author
Tang, P.1, 8, 9, Author              
Ye, Y.6, 10, Author
Zhou, W.4, 5, 11, Author
Bao, L.3, 11, 12, Author
Gao, H.-J.3, 11, 12, Author
Gong, Y.1, 13, Author
Affiliations:
1School of Materials Science and Engineering, Beihang University, ou_persistent22              
2School of Physics, Beihang University, ou_persistent22              
3Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, ou_persistent22              
4School of Physical Sciences, University of Chinese Academy of Sciences, ou_persistent22              
5CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, ou_persistent22              
6State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-Optoelectronics, School of Physics, Peking University, ou_persistent22              
7Academy for Advanced Interdisciplinary Studies, Peking University, ou_persistent22              
8Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
9Center for Free-Electron Laser Science, ou_persistent22              
10Collaborative Innovation Center of Quantum Matter, ou_persistent22              
11CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, ou_persistent22              
12Songshan Lake Materials Laboratory, ou_persistent22              
13Center for Micro-Nano Innovation of Beihang University, ou_persistent22              

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 Abstract: The discovery of ferromagnetic two-dimensional van der Waals materials has opened up opportunities to explore intriguing physics and to develop innovative spintronic devices. However, controllable synthesis of these 2D ferromagnets and enhancing their stability under ambient conditions remain challenging. Here, we report chemical vapor deposition growth of air-stable 2D metallic 1T-CrTe2 ultrathin crystals with controlled thickness. Their long-range ferromagnetic ordering is confirmed by a robust anomalous Hall effect, which has seldom been observed in other layered 2D materials grown by chemical vapor deposition. With reducing the thickness of 1T-CrTe2 from tens of nanometers to several nanometers, the easy axis changes from in-plane to out-of-plane. Monotonic increase of Curie temperature with the thickness decreasing from ~130.0 to ~7.6 nm is observed. Theoretical calculations indicate that the weakening of the Coulomb screening in the two-dimensional limit plays a crucial role in the change of magnetic properties.

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Language(s): eng - English
 Dates: 2020-01-272021-01-112021-02-05
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s41467-021-21072-z
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 (1) Sequence Number: 809 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723