> On Sat, 8/8/15, Khalid Ibne Masood Khalid <kimu...@gmail.com> wrote:
>
> Subject: [Pw_forum] keep getting negative frequencies in phonon
> calculation
> To: "PWSCF Forum" <pw_forum@pwscf.org>
> Date: Saturday, August 8, 2015,
of Chemistry
On Sat, 8/8/15, Khalid Ibne Masood Khalid <kimu...@gmail.com> wrote:
Subject: [Pw_forum] keep getting negative frequencies in phonon calculation
To: "PWSCF Forum" <pw_forum@pwscf.org>
Date: Saturday, August 8, 2015, 12:02 A
Dear Researchers,
I think this is an old problem, but I require your advice about how to
solve this problem. I am trying to calculate the phonon dispersion curve of
a 2D insulator material, and followed example 02 of phonon program. In the
ph.x input file I have used:
tr2_ph=1.0d-12,
