[Pw_forum] Caculation of Graphene's phonon dispersion and pdos

yhho yhho at pub.iams.sinica.edu.tw
Thu May 26 11:15:53 CEST 2011


Deae all,
I'm trying to do the phonon dispersion calaulation of Graphene.
Although the jobs have done sucessfully, the result are not great.
I think it may be coused by the wrong setting of my q2r.in or matdyn.in.
But some of terms in thoese input file are unfamiliar to me.
Please give me some suggestions about setting them. Thanks.

<ph.in>
phonons of AuC
 &inputph
  tr2_ph=1.0d-14,
  ldisp=.true.,
  nq1=4, nq2=4, nq3=4
  amass(1)= 12.0107
  prefix='AuC',
  outdir='./'
  fildyn='AuC.dyn',
 /

<q2r.in>
&input fildyn='AuC.dyn', zasr='crystal', flfrc='AuC444.fc' /

<matdyn.in>
 &input
    asr='simple',  amass(1)=12.0107,
    flfrc='AuC444.fc', flfrq='AuC.freq'
 /
   13
  0.00000000  0.00000000  0.00000000    1
  0.00000000  0.12500000  0.00000000    2
  0.00000000  0.25000000  0.00000000    3
  0.00000000  0.37500000  0.00000000    4
  0.00000000  0.50000000  0.00000000    5
  0.08333250  0.45833250  0.00000000    6
  0.16666500  0.41666500  0.00000000    7
  0.24999750  0.37499750  0.00000000    8
  0.33333000  0.33333000  0.00000000    9
  0.24999750  0.24999750  0.00000000   10
  0.16666500  0.16666500  0.00000000   11
  0.08333250  0.08333250  0.00000000   12
  0.00000000  0.00000000  0.00000000   13

Otherwise, I have another question about the last part of matdyn.in.
Does that mean the points such as gamma, M, K ,gamma?
I'm not sure about that...
Thanks a lot.

Best regarts,

Yu Han Ho
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