中国物理B ›› 2015, Vol. 24 ›› Issue (8): 86401-086401.doi: 10.1088/1674-1056/24/8/086401

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Bending-induced phase transition in monolayer black phosphorus

潘斗兴a c, 王自强a, 郭万林b   

  1. a State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;
    b State Key Laboratory of Mechanics and Control for Mechanical Structures and Key Laboratory for Intelligent Nano Materials and Devices (MOE), Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    c University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2015-01-23 修回日期:2015-03-30 出版日期:2015-08-05 发布日期:2015-08-05
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11021262, 11172303, and 11132011) and the National Basic Research Program of China (Grant No.2012CB937500).

Bending-induced phase transition in monolayer black phosphorus

Pan Dou-Xing (潘斗兴)a c, Wang Tzu-Chiang (王自强)a, Guo Wan-Lin (郭万林)b   

  1. a State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;
    b State Key Laboratory of Mechanics and Control for Mechanical Structures and Key Laboratory for Intelligent Nano Materials and Devices (MOE), Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    c University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2015-01-23 Revised:2015-03-30 Online:2015-08-05 Published:2015-08-05
  • Contact: Pan Dou-Xing E-mail:pandx@lnm.imech.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11021262, 11172303, and 11132011) and the National Basic Research Program of China (Grant No.2012CB937500).

摘要:

Bending-induced phase transition in monolayer black phosphorus is investigated through first principles calculations. By wrapping the layer into nanotubes along armchair and zigzag directions with different curvatures, it is found that phase transitions of the tubes occur when radius of curvature is smaller than 5 Å in bending along the zigzag direction, while the tubes remain stable along the armchair direction. Small zigzag tubes with odd numbered monolayer unit cells tend to transfer toward armchair-like phases, but the tubes with even numbered monolayer unit cells transfer into new complex bonding structures. The mechanism for the bending-induced phase transition is revealed by the comprehensive analyses of the bending strain energies, electron density distributions, and band structures. The results show significant anisotropic bending stability of black phosphorus and should be helpful for its mechanical cleavage fabrication in large size.

关键词: bending, monolayer black phosphorus, phase transition

Abstract:

Bending-induced phase transition in monolayer black phosphorus is investigated through first principles calculations. By wrapping the layer into nanotubes along armchair and zigzag directions with different curvatures, it is found that phase transitions of the tubes occur when radius of curvature is smaller than 5 Å in bending along the zigzag direction, while the tubes remain stable along the armchair direction. Small zigzag tubes with odd numbered monolayer unit cells tend to transfer toward armchair-like phases, but the tubes with even numbered monolayer unit cells transfer into new complex bonding structures. The mechanism for the bending-induced phase transition is revealed by the comprehensive analyses of the bending strain energies, electron density distributions, and band structures. The results show significant anisotropic bending stability of black phosphorus and should be helpful for its mechanical cleavage fabrication in large size.

Key words: bending, monolayer black phosphorus, phase transition

中图分类号:  (Structural transitions in nanoscale materials)

  • 64.70.Nd
71.15.Nc (Total energy and cohesive energy calculations) 71.20.-b (Electron density of states and band structure of crystalline solids) 73.63.Fg (Nanotubes)