中国物理B ›› 2019, Vol. 28 ›› Issue (9): 96101-096101.doi: 10.1088/1674-1056/ab38a5

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

Van der Waals interlayer potential of graphitic structures: From Lennard-Jones to Kolmogorov-Crespy and Lebedeva models

Zbigniew Koziol, Grzegorz Gawlik, Jacek Jagielski   

  1. 1 National Center for Nuclear Research, Materials Research Laboratory, ul. Andrzeja Sołtana 7, 05-400 Otwock-wierk, Poland;
    2 Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa, Poland
  • 收稿日期:2019-06-06 修回日期:2019-07-16 出版日期:2019-09-05 发布日期:2019-09-05
  • 通讯作者: Zbigniew Kozioł E-mail:zbigniew.koziol@ncbj.gov.pl

Van der Waals interlayer potential of graphitic structures: From Lennard-Jones to Kolmogorov-Crespy and Lebedeva models

Zbigniew Koziol1, Grzegorz Gawlik2, Jacek Jagielski1,2   

  1. 1 National Center for Nuclear Research, Materials Research Laboratory, ul. Andrzeja So?tana 7, 05-400 Otwock-wierk, Poland;
    2 Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa, Poland
  • Received:2019-06-06 Revised:2019-07-16 Online:2019-09-05 Published:2019-09-05
  • Contact: Zbigniew Kozioł E-mail:zbigniew.koziol@ncbj.gov.pl

摘要:

The experimental knowledge on interlayer potential of graphitic materials is summarized and compared with the computational results based on phenomenological models. Besides Lennard-Jones approximation, the Mie potential is discussed, as well as the Kolmogorov-Crespy model and equation of Lebedeva et al. An agreement is found between a set of reported physical properties of graphite (layer binding energies, compressibility along c-axis in a broad pressure range, Raman frequencies for bulk shear and breathing modes under pressure), when a proper choice of model parameters is taken. It is argued that anisotropic potentials, Kolmogorov-Crespy and Lebedeva, are preferable for modeling, as they provide a better, self-consistent description. A method of fast numerical modeling, convenient for the accurate estimation of the discussed physical properties, is proposed. It may be useful in studies of other van der Waals homo/heterostructures as well.

关键词: graphene, van der Waals structures, interlayer potential

Abstract:

The experimental knowledge on interlayer potential of graphitic materials is summarized and compared with the computational results based on phenomenological models. Besides Lennard-Jones approximation, the Mie potential is discussed, as well as the Kolmogorov-Crespy model and equation of Lebedeva et al. An agreement is found between a set of reported physical properties of graphite (layer binding energies, compressibility along c-axis in a broad pressure range, Raman frequencies for bulk shear and breathing modes under pressure), when a proper choice of model parameters is taken. It is argued that anisotropic potentials, Kolmogorov-Crespy and Lebedeva, are preferable for modeling, as they provide a better, self-consistent description. A method of fast numerical modeling, convenient for the accurate estimation of the discussed physical properties, is proposed. It may be useful in studies of other van der Waals homo/heterostructures as well.

Key words: graphene, van der Waals structures, interlayer potential

中图分类号:  (Structure of nanoscale materials)

  • 61.46.-w
73.20.At (Surface states, band structure, electron density of states) 73.22.-f (Electronic structure of nanoscale materials and related systems) 61.48.De (Structure of carbon nanotubes, boron nanotubes, and other related systems)