Dear PWSCF user,<br />
<br />
We get all phonons postive in step 4, but in step 5 some are negative.Does one really need to go for the step 5 for phonon dispersion curves. If yes then suggest the modification for step 5.<br />
<br />
Sanjeev Gupta<br><br>S. K. Gupta<br /><br />
PhD Candidate,<br /><br />
Dept. of Physics,<br /><br />
Bhavnagar University.<br /><br />
Bhavnagar, 364 002., Gujarat.<br /><br />
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