EPW Forum

Dear developer and users,

I know similar questions have been answered. However, I still want to make sure how to convert linewidth to scattering rate.

I know the below equation should be correct for electron from the Equation 61.

The scattering rate in (1/s) = 2/hbar * linewidth in eV

Is it also correct for phonon? If it is, it seems to be two times larger than the Equation 2 in B. Liao, B. Qiu, J. Zhou, S. Huberman, K. Esfarjani, and G. Chen, Phys. Rev. Lett. 114, 1 (2015).


Thank you for your help!

Hi,

I found that it is true for phonons either as shown as the equation 146 in the paper F. Giustino, Electron-phonon interactions from first princiles (2016).

The "2" in phonon linewidth equation comes from the degeneracy of spins.

Dear tswang,

That's correct.

Sorry for the delayed reply to this simple question.

Best,

Samuel