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Dear QE users,
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<p>I calculated the phonon dispersion for AgSbTe2. Attached shows the the input file and the result.</p>
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<p>Phonon dispersion is zero at Gamma point, but is negative at other points.</p>
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<p>Phonon dispersion at other points should be positive.<br>
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<p>Could you help to solve this problem?</p>
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<p>Kind regards,</p>
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<p>Min</p>
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School of Mech & Mining Engineering, University of Queensland, Australia.
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