[Pw_forum] Documentation on El-Ph coupling

[DdrSmiLe]

Dear Eyvaz

Thank you for your reply
It helps much. I noticed the code, lambda.f90, you shared contents the
information about T_c.

I am sorry for neglecting affiliation I belong to

Sincerely,
Joey, Liu

Acadmic Sinica, IAMS
Research Assistant

2009/5/13 Eyvaz Isaev <eyvaz_isaev at yahoo.com>

>
> Dear Liu,
>
> --- On Tue, 5/12/09, DdrSmiLe <ddrsmile at gmail.com> wrote:
>
> > Would your code print out the T_c?
> > If so, where would it be printed?
>
> Without any doubts, if everything went properly. You can find T_c printed
> after lambda.x finished.
>
> > My major is not chemistry or physics, but I'm doing job
> > related to them. Therefore, there are too many things confuse me.
> >
> Then yo should read some solid state textbooks (Kittel, Ashcroft-Mermin,
> Zaiman, Ricahrd Martin, Harrison, Kohanoff, Kantorovich, etc.)
> This will help you not to be confused.
>
> Please provide your affiliation when post a question to this forum.
>
> Bests,
> Eyvaz.
>
>
> > Joey, Liu
> >
> > 2009/5/7 Eyvaz Isaev <eyvaz_isaev at yahoo.com>
> >
> > > Hi,
> > >
> > > Sorry for empty mail, unexpectedly I clicked on Send
> > button.
> > >
> > > Well, I think attached files are what you need. The
> > first one (modified
> > > elphon.f90) writes special files, and the second one
> > uses these files to
> > > find lambda and then T_c via the Allen-Dynes equation
> > (\omega_log instead of
> > > the Debye temperature).
> > >
> > > In fact, recently I suggested to change original
> > elphon.f90 and lambda.f90
> > > files with those (at least, include changes), but I do
> > not know whether this
> > > suggestion was accepted by developers.
> > > Attached elphon.f90 worked for QE 4.0.4, at least.
> > >
> > > Any questions, please contact me.
> > >
> > > Bests,
> > > Eyvaz.
> > >
> > >
> > -------------------------------------------------------------------
> > > Prof. Eyvaz Isaev,
> > > Theoretical Physics Department, Moscow State Institute
> > of Steel & Alloys,
> > > Russia,
> > > Department of Physics, Chemistry, and Biology (IFM),
> > Linkoping University,
> > > Sweden
> > > Condensed Matter Theory Group, Uppsala University,
> > Sweden
> > > Eyvaz.Isaev at fysik.uu.se, isaev at ifm.liu.se,
> > eyvaz_isaev at yahoo.com
> > >
> > >
> > > --- On Wed, 5/6/09, David Tompsett
> > <dat36 at cam.ac.uk> wrote:
> > >
> > > > From: David Tompsett <dat36 at cam.ac.uk>
> > > > Subject: [Pw_forum] Documentation on El-Ph
> > coupling
> > > > To: pw_forum at pwscf.org
> > > > Date: Wednesday, May 6, 2009, 4:30 PM
> > >  > Dear All,
> > > >              I am interested in calculating the
> > > > electron-phonon coupling
> > > > of a metallic system in QE. I would like to then
> > apply the
> > > > McMillan
> > > > formula for the prediction of the superconducting
> > Tc.
> > > >
> > > > In the basic tutorials list, /Hands-on Tutorial
> > of Quantum
> > > > Espresso
> > > >
> > <http://www.fisica.uniud.it/%7Egiannozz/QE-Tutorial/<http://www.fisica.uniud.it/~giannozz/QE-Tutorial/>
> <http://www.fisica.uniud.it/~giannozz/QE-Tutorial/>
>  > > >,/
> > > > I could find
> > > > examples on the El-ph calculation for Aluminium
> > at X. Is
> > > > there any
> > > > further documentation available to indicated on
> > how to find
> > > > the
> > > > integrated lambda and wlog that enter the
> > McMillan formula
> > > > for Tc?
> > > >
> > > > Thank you,
> > > > David.
> > > >
> > > > --
> > > > David A. Tompsett
> > > > Quantum Matter Group
> > > > Cavendish Laboratory
> > > > J. J. Thomson Avenue
> > > > Cambridge CB3 0HE
> > > > U.K.
> > > > Tel: +44 7907 566351 (mobile)
> > > > Fax: +44 1223 768140
> > > > http://www-qm.phy.cam.ac.uk/
> > > >
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> > >
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