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Room-temperature ferroelectricity in MoTe2 down to the atomic monolayer limit

Author

Listed:
  • Shuoguo Yuan

    (The Hong Kong Polytechnic University)

  • Xin Luo

    (The Hong Kong Polytechnic University
    Sun Yat-sen University)

  • Hung Lit Chan

    (The Hong Kong Polytechnic University)

  • Chengcheng Xiao

    (The Hong Kong Polytechnic University)

  • Yawei Dai

    (The University of Hong Kong)

  • Maohai Xie

    (The University of Hong Kong)

  • Jianhua Hao

    (The Hong Kong Polytechnic University)

Abstract

Ferroelectrics allow for a wide range of intriguing applications. However, maintaining ferroelectricity has been hampered by intrinsic depolarization effects. Here, by combining first-principles calculations and experimental studies, we report on the discovery of robust room-temperature out-of-plane ferroelectricity which is realized in the thinnest monolayer MoTe2 with unexploited distorted 1T (d1T) phase. The origin of the ferroelectricity in d1T-MoTe2 results from the spontaneous symmetry breaking due to the relative atomic displacements of Mo atoms and Te atoms. Furthermore, a large ON/OFF resistance ratio is achieved in ferroelectric devices composed of MoTe2-based van der Waals heterostructure. Our work demonstrates that ferroelectricity can exist in two-dimensional layered material down to the atomic monolayer limit, which can result in new functionalities and achieve unexpected applications in atomic-scale electronic devices.

Suggested Citation

  • Shuoguo Yuan & Xin Luo & Hung Lit Chan & Chengcheng Xiao & Yawei Dai & Maohai Xie & Jianhua Hao, 2019. "Room-temperature ferroelectricity in MoTe2 down to the atomic monolayer limit," Nature Communications, Nature, vol. 10(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09669-x
    DOI: 10.1038/s41467-019-09669-x
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    1. Le Lei & Jiaqi Dai & Haoyu Dong & Yanyan Geng & Feiyue Cao & Cong Wang & Rui Xu & Fei Pang & Zheng-Xin Liu & Fangsen Li & Zhihai Cheng & Guang Wang & Wei Ji, 2023. "Electronic Janus lattice and kagome-like bands in coloring-triangular MoTe2 monolayers," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Zhouxiaosong Zeng & Zhiqiang Tian & Yufan Wang & Cuihuan Ge & Fabian Strauß & Kai Braun & Patrick Michel & Lanyu Huang & Guixian Liu & Dong Li & Marcus Scheele & Mingxing Chen & Anlian Pan & Xiao Wang, 2024. "Dual polarization-enabled ultrafast bulk photovoltaic response in van der Waals heterostructures," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    3. Yangliu Wu & Zhaozhuo Zeng & Haipeng Lu & Xiaocang Han & Chendi Yang & Nanshu Liu & Xiaoxu Zhao & Liang Qiao & Wei Ji & Renchao Che & Longjiang Deng & Peng Yan & Bo Peng, 2024. "Coexistence of ferroelectricity and antiferroelectricity in 2D van der Waals multiferroic," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    4. Yue Niu & Lei Li & Zhiying Qi & Hein Htet Aung & Xinyi Han & Reshef Tenne & Yugui Yao & Alla Zak & Yao Guo, 2023. "0D van der Waals interfacial ferroelectricity," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    5. Ruofan Du & Yuzhu Wang & Mo Cheng & Peng Wang & Hui Li & Wang Feng & Luying Song & Jianping Shi & Jun He, 2022. "Two-dimensional multiferroic material of metallic p-doped SnSe," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    6. Zhenyu Sun & Yueqi Su & Aomiao Zhi & Zhicheng Gao & Xu Han & Kang Wu & Lihong Bao & Yuan Huang & Youguo Shi & Xuedong Bai & Peng Cheng & Lan Chen & Kehui Wu & Xuezeng Tian & Changzheng Wu & Baojie Fen, 2024. "Evidence for multiferroicity in single-layer CuCrSe2," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    7. Weng Fu Io & Sin -Yi Pang & Lok Wing Wong & Yuqian Zhao & Ran Ding & Jianfeng Mao & Yifei Zhao & Feng Guo & Shuoguo Yuan & Jiong Zhao & Jiabao Yi & Jianhua Hao, 2023. "Direct observation of intrinsic room-temperature ferroelectricity in 2D layered CuCrP2S6," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    8. Peng Meng & Yaze Wu & Renji Bian & Er Pan & Biao Dong & Xiaoxu Zhao & Jiangang Chen & Lishu Wu & Yuqi Sun & Qundong Fu & Qing Liu & Dong Shi & Qi Zhang & Yong-Wei Zhang & Zheng Liu & Fucai Liu, 2022. "Sliding induced multiple polarization states in two-dimensional ferroelectrics," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    9. Yunze Gao & Astrid Weston & Vladimir Enaldiev & Xiao Li & Wendong Wang & James E. Nunn & Isaac Soltero & Eli G. Castanon & Amy Carl & Hugo Latour & Alex Summerfield & Matthew Hamer & James Howarth & N, 2024. "Tunnel junctions based on interfacial two dimensional ferroelectrics," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    10. Mengjiao Han & Cong Wang & Kangdi Niu & Qishuo Yang & Chuanshou Wang & Xi Zhang & Junfeng Dai & Yujia Wang & Xiuliang Ma & Junling Wang & Lixing Kang & Wei Ji & Junhao Lin, 2022. "Continuously tunable ferroelectric domain width down to the single-atomic limit in bismuth tellurite," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    11. Ruirui Niu & Zhuoxian Li & Xiangyan Han & Zhuangzhuang Qu & Dongdong Ding & Zhiyu Wang & Qianling Liu & Tianyao Liu & Chunrui Han & Kenji Watanabe & Takashi Taniguchi & Menghao Wu & Qi Ren & Xueyun Wa, 2022. "Giant ferroelectric polarization in a bilayer graphene heterostructure," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    12. Yi Hu & Lukas Rogée & Weizhen Wang & Lyuchao Zhuang & Fangyi Shi & Hui Dong & Songhua Cai & Beng Kang Tay & Shu Ping Lau, 2023. "Extendable piezo/ferroelectricity in nonstoichiometric 2D transition metal dichalcogenides," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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