Author Topic: Fermi velocity  (Read 306 times)

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Offline Roc2019

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Fermi velocity
« on: June 11, 2020, 04:01 »
Dear Sir,

 I know it is easy to obtian the fermi velocity at a specific k point from the tutorial. 
https://docs.quantumatk.com/manual/Types/calculateVelocity/calculateVelocity.html

However,  how to calculate and plot the Fermi verlocity in 2D and 3D BZ space like the attachment of MgB2 ?   

Thank you so much.

Offline Tue Gunst

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Re: Fermi velocity
« Reply #1 on: June 15, 2020, 10:02 »
Hi,
There is a FermiSurface analysis object:
https://docs.quantumatk.com/manual/Types/FermiSurface/FermiSurface.html

When opening the result in the Viewer analyzer in nanolab then open the "Fermi Surface" menu.
This will allow you to tick on "color by gradient" and choose a suitable colormap.
An example for Ruthenium of Fermi-surfaces and the contribution from individual bands can be seen here:
https://arxiv.org/abs/2001.02216