Competition between Stepwise Polarization Switching and Chirality Coupling in Ferroelectric GeS Nanotubes

被引:4
|
作者
Wang, Hao-Chen [1 ,2 ]
Wang, Zhi-Hao [2 ]
Chen, Xuan-Yan [2 ]
Wei, Su-Huai [2 ]
Zhu, Wenguang [1 ]
Zhang, Xie [2 ]
机构
[1] Univ Sci & Technol China, Sch Phys Sci, Hefei 230026, Peoples R China
[2] Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1088/0256-307X/40/4/047701
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Ferroelectricity of group-IV chalcogenides MX (M = Ge, Sn; X = Se, S) monolayers has been extensively investigated. However, how the ferroelectricity evolves in their one-dimensional nanotubes remains largely unclear. Employing an accurate deep-learning interatomic potential of first-principles precision, we uncover a general stepwise mechanism for polarization switching in zigzag and chiral GeS nanotubes, which has an energy barrier that is substantially lower than the one associated with the conventional one-step switching mechanism. The switching barrier (per atom) gradually decreases with increasing the number of intermediate steps and converges to a value that is almost independent of the tube diameter. In the chiral GeS nanotubes, the switching path of polarization with chirality coupling is preferred at less intermediate steps. This study unveils novel ferroelectric switching behaviors in one-dimensional nanotubes, which is critical to coupling ferroelectricity and chirality.
引用
收藏
页数:5
相关论文
共 24 条
  • [21] Competition between Ferroelectric and Ferroelastic Domain Wall Dynamics during Local Switching in Rhombohedral PMN-PT Single Crystals
    Alikin, Denis
    Turygin, Anton
    Ushakov, Andrei
    Kosobokov, Mikhail
    Alikin, Yurij
    Hu, Qingyuan
    Liu, Xin
    Xu, Zhuo
    Wei, Xiaoyong
    Shur, Vladimir
    [J]. NANOMATERIALS, 2022, 12 (21)
  • [22] The Impact of Intrinsic RC Coupling With Domains Flipping on Polarization Switching Time of Hf0.5Zr0.5O2 Ferroelectric Capacitor
    Dong, Yulong
    Cui, Tianning
    Chen, Danyang
    Liu, Jingquan
    Si, Mengwei
    Li, Xiuyan
    [J]. IEEE ELECTRON DEVICE LETTERS, 2023, 44 (09) : 1480 - 1483
  • [23] Interrelation between domain structures and polarization switching in hybrid improper ferroelectric Ca3(Mn,Ti)2O7
    Gao, Bin
    Huang, Fei-Ting
    Wang, Yazhong
    Kim, Jae-Wook
    Wang, Lihai
    Lim, Seong-Joon
    Cheong, Sang-Wook
    [J]. APPLIED PHYSICS LETTERS, 2017, 110 (22)
  • [24] Coupling and competition between ferroelectric and antiferroelectric states in Ca-doped Sr0.9-xBa0.1CaxTiO3: Multipolar states
    Wei, T.
    Liu, J. -M.
    Zhou, Q. J.
    Song, Q. G.
    [J]. PHYSICAL REVIEW B, 2011, 83 (05):