Dear all,
I am doing phonon calculations at the Dirac K point of a graphene allotrope and
I am getting two negative frequencies (almost degenerate). I need to confirm
something regarding the units of the q-points. Should they be in terms of b1,
b2 and b3, the reciprocal lattice vectors or in cartesian coordinates in terms
of 2Pi/a? Is this written somewhere in the Guide...
Reagrds
Elie Moukaesuniversity of NottinghamNG7 2RDUK
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