Hi Mahmood,

There is a package implemented for calculating Z2 invariant. As far as I understand it works only for centrosymmetric systems.

http://z2pack.ethz.ch/doc/2.0/example_espresso.html


On 08.09.2018 11:10, Asad Mahmood wrote:
Hi,
I am working with some 2D material and putting biaxial strain in it. At some particular value of lattice constant the band structure shows band inversion at Gamma point. I want to calculate Z2 topological invariant. Please help me in computing it.

Thanks,
Asad Mahmood
QAU Islamabad,
Pakistan


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