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Support page for using Z2FH in OpenMX
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This page supports to use our code, "Z2FH" in OpenMX 3.9. Z2FH computes $Z_{2}$ invariant by Berry curvature $F$ and Berry connection ${\bf A}$ [1,2]. This code is included in OpenMX3.9's source. It can compute the system broken space inversion symmetry, so this is suitable for computing $Z_{2}$ invariant of the system in the electric field or polar materials etc. Please cite the following article:

  1. H. Sawahata, N. Yamaguchi, H. Kotaka and F. Ishii, Jpn. J. Appl. Phys. 57, 030309 (2018).
  2. H. Sawahata, N. Yamaguchi and F. Ishii, Appl. Phys. Express 12, 075009 (2019).


Please see the OpenMX3.9's manual.


Please see Z2examples.


  1. T. Fukui and Y. Hatsugai, J. Phys. Soc. Jpn. 76, 053702 (2007).
  2. W. Feng, J. Wen, J. Zhou, D. Xiao, and Y. Yao, Comput. Phys. Commun. 183, 1849 (2012).
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