what is the unit of the calculated Fermo velocity?

[mitsuaki1987]

(2020-01-22 23:54 by BLISEU)
Hi all! When I got the Fermo velocity file "case_fs_vf.frmsf", I wonder whether the unit of the velocity is m/s? Can the color bar show the range of velocity with the value and unit? Thank you! Bin Li

[mitsuaki1987]

(2020-01-22 23:57 by BLISEU)
Sorry, I mean Fermi velocity.

[mitsuaki1987]

(2020-01-23 11:48 by mitsuaki1987 )
Dear Bin Dou you mean the Fermi velocity wich is computed inside the FermiSurfer by using "Color Scale Mode"?

https://mitsuaki1987.github.io/fermisurfer/en/_build/html/ops.html#color-scale-mode-update-required

If so, its unit depends on the units of input reciprocal lattice vectors and the energy.

For example, when the unit of reciprocal lattice vector is $a_B^{-1}$ and the unit of the energy is Ry, the unit of the Fermi velocity is $\textrm{Ry}\cdot a_B$

I could not understand your second question.

Best regards,

Mitsuaki Kawamura

[mitsuaki1987]

(2020-01-24 00:12 by BLISEU )
I got the bxsf file from Wien2k + Xcrysden, the unit of Fermi velocity should be Ry.Ang or Ry. Bohr ? If I want to convert it to m/s, what coefficient should I multiply? Thank you!