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Different Tc obtained in EPW and lambda.x calculation

Posted: Mon Jun 12, 2023 4:53 am
by jisvin
Dear Expert users,
The estimated Allen-Dynes Tc using EPW is twice that obtained from Quantum espresso lambda.x calculation. Why is this discrepancy happening? I was solving an isotropic Eliashberg equation.

Re: Different Tc obtained in EPW and lambda.x calculation

Posted: Tue Jun 27, 2023 9:59 pm
by roxana
Hi,

You need to converge lambda with both k and q meshes. This is not very easily done in QE since the k and q meshes used are in general pretty coarse.

Best,
Roxana