[Pw_forum] Strange Values of Tc

[Giovanni Cantele]

Not that easy to answer without seeing relevant input/output files.

As far as I know, Tc is quite difficult to converge. Did you made VERY VERY VERY careful checks on convergence with
resect to ALL calculation parameters, starting from phonon frequencies?

Giovanni


> On 28 Jul 2017, at 11:37, Isaiah Moses <imoses87 at gmail.com> wrote:
> 
> Dear everyone,
> 
> I did an el-ph calculation of a monoclinic structure and am getting really strange values of Tc . See the result below
> lambda        omega_log          T_c
>    0.00994       112.048            0.10012314E+08   
>    0.03760        92.373            0.13380511E+10   
>    0.07564        90.247            0.39802174E+19   
>    0.09959        89.414            0.19865362E+78   
>    0.11010        89.463            0.40671597-151         
>    0.11454        90.329            0.16986711E-65   
>    0.11678        92.320            0.99512429E-51   
>    0.11772        94.657            0.29927798E-46   
>    0.11744        97.141            0.16242032E-47   
>    0.11619        99.442            0.65514785E-54   
> 
> I'm wondering why such values.
> 
> Any comment shall be greatly appreciated.
> 
> Thanks,
> Isaiah
> 
> -- 
> Isaiah Abu Moses
> Graduate Student,
> Physics Department,
> University of Ibadan,
> Nigeria
> 
> 
> 
> -- 
> Isaiah Abu Moses
> Graduate Student,
> Physics Department,
> University of Ibadan,
> Nigeria
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-- 

Giovanni Cantele, PhD
CNR-SPIN
c/o Dipartimento di Fisica
Universita' di Napoli "Federico II"
Complesso Universitario M. S. Angelo - Ed. 6
Via Cintia, I-80126, Napoli, Italy
e-mail: giovanni.cantele at spin.cnr.it
Phone: +39 081 676910
Skype contact: giocan74

ResearcherID: http://www.researcherid.com/rid/A-1951-2009
Web page: http://people.fisica.unina.it/~cantele

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