<div>dear all,</div> <div> I'm doing the calculation about the scf CuI (P21/M). But the Sym.Ops. in the output file is not constent with that in Materials studio or Wien2k. My input file for pwscf is </div> <div> &control<BR> calculation='scf',<BR> restart_mode='from_scratch',<BR> prefix='cui'<BR> pseudo_dir = '$PSEUDO_DIR/',<BR> outdir='$TMP_DIR/'<BR> tstress=.t.,<BR> tprnfor=.t.<BR> /<BR> &system<BR> ibrav = 14, celldm(1) =celldm(1) =6.779395,celldm(2) =1.11291986,celldm(3)=1.47949825,celldm(4)=-0.146169358, nat= 4, ntyp= 2,<BR> ecutwfc=100,<BR>/<BR> &electrons<BR> mixing_beta = 0.7<BR> conv_thr = 1.0d-8<BR> /<BR>ATOMIC_SPECIES<BR> Cu 107.87
cu.cpi.UPF<BR> I 126.90 i.cpi.UPF<BR>ATOMIC_POSITIONS {crystal}<BR> Cu 0.815700000 0.75000000 0.77970000<BR> Cu 0.184300000 0.25000000 0.22030000<BR> I 0.300400000 0.25000000 0.71340000<BR> I 0.699600000 0.75000000 0.28660000<BR>K_POINTS {automatic}<BR>8 8 6 0 0 0<BR>EOF<BR>and the Sym.Ops. in the output file cui.scf.out is 2 (with inversion), while it is 4 in Materials studio or Wien2k.</div> <div>could you please tell me the reason about this difference?</div> <div>best regards.</div><p>
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