Regarding qpoints in cartisien

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appalakondaiah

Regarding qpoints in cartisien

Post by appalakondaiah »

Dear all,

Recently, I started working with EPW code to calculate the electron-phonon coupling and further phonon line widths for 2D materials. While, doing the calculations (means not tutorials presented in the website), I puzzled to understand as well as calculate the q points in Cartesian coordinates (For e.g 28 in MgB2 ), as well as their weights. Can any one please help me regarding the same !!!

Thanks in advance
Sincerely
S. Appalakondaiah
SAINT, SKKU
South Korea

sponce
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Posts: 616
Joined: Wed Jan 13, 2016 7:25 pm
Affiliation: EPFL

Re: Regarding qpoints in cartisien

Post by sponce »

Dear S. Appalakondaiah,

The list of q-point that you need to provide in EPW should be exactly the same as the one determined by the phonon code (you can take from the output of ph.out).

The weight actually does not matter (not read, there for history reasons). You can put 1.0 for all the weights.

Best,

Samuel
Prof. Samuel Poncé
Chercheur qualifié F.R.S.-FNRS / Professeur UCLouvain
Institute of Condensed Matter and Nanosciences
UCLouvain, Belgium
Web: https://www.samuelponce.com

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