The ABINIT Users Mailing List ( CLOSED )

[Prasenjit Sen <prasen@hri.res.in>]

Hi Matthieu,
   Thanks for appreciating my courage! Anyway, your input was very
valuable. I have a few more quick questions that I list at the end. Would
appreciate your further input.

   Prasenjit

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---------- Forwarded message ----------
Date: Thu, 13 Apr 2006 14:04:10 +0100 (BST)
From: Matthieu Verstraete <mjv500@york.ac.uk>
Reply-To: forum@abinit.org
To: forum@abinit.org
Subject: Re: [abinit-forum] Eliashberg Tc doesn't converge


You're a courageous man, Prasenjit.

> the Eliashberg Tc does not converge, though MacMillan Tc seems to
> converge.
McMillan is calculated straightforwardly from lambda and so on: there is
nothing to converge.

===============================
How close can I expect to get to experimental *lambda*, what is your
experience?
For example, in the tutorial telphon (with obviously a crude set
of parameters), lambda for bulk Al works out to be ~9.6. By increasing
kpints, q-points and ecut it turns out to be ~0.3 while the expt number
is 0.44.
Can I hope to do better?
Which other parameters are important for this?
How best to set the parameter mustar?