<div dir="ltr"><div><div><div><div><div><div><div><div>Dear pwscf users and developpers, <br><br></div>I am trying to use the "high accuracy" Ni pseudopotential from pwlibrary v1.0.0 Ni.pbe-spn-rrkjus_psl.1.0.0.UPF and I have trouble making it converge for phonon calculations. For example, for fcc nickel metal out of the Brillouin zone (q=-0.25, 0.25, -0.25), see inputs below. Would you have any suggestions on fixing this problem? <br></div></div><br></div>scf input: <br>--------------------<br>Ni metal <br> &control<br> calculation = 'scf',<br> restart_mode = 'from_scratch' ,<br> prefix = 'NIMH',<br> disk_io = 'default' ,<br> pseudo_dir = './',<br> outdir ='/tmpdir/$LOGNAME/',<br> tprnfor = .true.,<br> tstress = .true.,<br>/&end<br><br>&system<br> ibrav=2, celldm(1)=6.659, <br> nat=1, ntyp=1, ecutwfc=110.0, ecutrho=660.0,<br> nspin=2, starting_magnetization(1)=0.5, occupations='smearing', smearing='mp', degauss=0.02,<br>/&end<br><br> &electrons<br> electron_maxstep = 80,<br> conv_thr = 1.d-7,<br> mixing_mode = 'plain',<br> startingwfc = 'atomic',<br> mixing_beta = 0.5,<br>/&end<br><br>ATOMIC_SPECIES<br> Ni 57.9353 Ni.pbe-spn-rrkjus_psl.1.0.0.UPF <br><br>ATOMIC_POSITIONS crystal<br>Ni 0.000000000 0.000000000 0.000000000<br><br>K_POINTS (automatic)<br>10 10 10 1 1 1<br>---------------------<br><br></div>ph input: <br>---------------------<br>Ni metal<br> &inputph<br> tr2_ph=1.0d-17, <br> prefix='NIMH',<br> amass(1)=57.9353, <br> outdir='/tmpdir/$LOGNAME/', <br> fildyn='mat.${PREFIX}',<br> /&end<br> -0.2500000 0.2500000 -0.2500000<br>-----------------------<br><br></div>Thank you very much for any help, <br><br></div>Best regards, <br><br></div>Merlin Méheut <br><div><div><div><div><div><div><div><br><br><div><div><div><br>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Merlin Méheut<br>adresse labo:<br>GET - OMP - Université Paul Sabatier <br>14 avenue Edouard Belin<br>31400 Toulouse<br>FRANCE <br>tel: (+33) 5 61 33 26 17<br><br></div></div>
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