Dear PWscf users,<br>I am doing gamma Phonon calculation on LaMnO3. Since the unit cell contain 20 atoms, so at gamma i am getting 60 frequencies (3 acoustic modes ~ 0)<br><br>If I am just interested in just the first three frequencies ( the acoustic modes), what changes i have to made in the input file.<br>
<br>phonons of LaMnO3-pero<br> &inputph<br> tr2_ph=1.0d-10,<br> alpha_mix(1)= 0.7,<br> prefix='lamno3',<br>! epsil=.true.,<br>! ldisp=.true.,<br>! nq1=2, nq2=2, nq3=2<br>! iq1=6, iq2=6, iq3=6<br>! lnscf= .true.<br>
amass(1)= 138.9055,<br> amass(2)=54.938049,<br> amass(3)=15.9994, <br> outdir = './OUT',<br> fildyn='LaMnO3.dynG',<br> /<br> 0.0 0.0 0.0<br><br>-- <br>Dr. Bipul Rakshit<br>Research Associate,<br>S N Bose Centre for Basic Sciences,<br>
Salt Lake,<br>Kolkata 700 098<br>India<br>