<pre><font style="font-family:times new roman,serif" size="4">Dear all,<br>When I calculate the RuO2 </font><font style="font-family:times new roman,serif" size="4">in Rutile structure</font><font style="font-family:times new roman,serif" size="4">, I find pwscf recognizes wrong point groups symmetry D_2h (mmm) rather than D_4h(4/mmm)with </font><font style="font-family:times new roman,serif" size="4">a series of warnings in the output file.</font><font style="font-family:times new roman,serif" size="4">
I tried to figure out the problem but not got any answer from my the input and output data for the pw.x is as follows<br><br><br>*********input file**********<br>___________________________<br> &control<br> calculation='scf',<br>
prefix='RuO2',<br> restart_mode='from_scratch',<br> pseudo_dir = '/media/sanjay/PWSCF/pseudo/',<br> outdir='./',<br> tstress = .true.<br> tprnfor = .true.<br> verbosity = 'high',<br>
etot_conv_thr = 1.0d-5,<br> forc_conv_thr = 1.0d-4,<br>/<br> &system<br> ibrav=6,<br> celldm(1) =8.525519849,<br> celldm(3) =0.682926829,<br> nat=6,<br> ntyp=2,<br> ecutwfc = 30,<br> ecutrho= 500, <br>
occupations='smearing',<br> smearing = 'm-p',<br> degauss = 0.05,<br>/<br> &electrons<br> mixing_mode = "local-TF",<br> mixing_beta = 0.05,<br> conv_thr = 1.0d-10,<br>
/<br>ATOMIC_SPECIES <br>Ru 101.07 Ru.pw91-n-van.UPF<br>O 15.9994 O.pw91-van_ak.UPF<br>ATOMIC_POSITIONS (crystal)<br> Ru 0.0000000000E+00 0.0000000000E+00 0.0000000000E+00<br> O 0.8053000000E+00 0.1947000000E+00 0.5000000000E+00<br>
Ru 0.5000000000E+00 0.5000000000E+00 0.5000000000E+00<br> O 0.3053000000E+00 0.3053000000E+00 0.0000000000E+00<br> O 0.6947000000E+00 0.6947000000E+00 0.5551115123E-16<br> O 0.1947000000E+00 0.8053000000E+00 0.5000000000E+00<br>
K_POINTS {automatic} <br>6 6 9 0 0 0 <br>______________________________________<br>output data<br><br>|<br>|<br>|<br> warning: symmetry operation # 3 not allowed. fractional translation:<br> 0.5000000 -0.5000000 0.5000000 in crystal coordinates<br>
warning: symmetry operation # 4 not allowed. fractional translation:<br> -0.5000000 0.5000000 0.5000000 in crystal coordinates<br> warning: symmetry operation # 7 not allowed. fractional translation:<br>
-0.5000000 0.5000000 -0.5000000 in crystal coordinates<br> warning: symmetry operation # 8 not allowed. fractional translation:<br> 0.5000000 -0.5000000 -0.5000000 in crystal coordinates<br> warning: symmetry operation # 11 not allowed. fractional translation:<br>
-0.5000000 0.5000000 -0.5000000 in crystal coordinates<br> warning: symmetry operation # 12 not allowed. fractional translation:<br> 0.5000000 -0.5000000 -0.5000000 in crystal coordinates<br> warning: symmetry operation # 15 not allowed. fractional translation:<br>
0.5000000 -0.5000000 0.5000000 in crystal coordinates<br> warning: symmetry operation # 16 not allowed. fractional translation:<br> -0.5000000 0.5000000 0.5000000 in crystal coordinates<br>|<br>|<br>
| point group D_2h (mmm) <br> there are 8 classes<br> the character table:<br><br> E C2_z C2_y C2_x i s_xy s_xz s_yz <br>A_g 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00<br>B_1g 1.00 1.00 -1.00 -1.00 1.00 1.00 -1.00 -1.00<br>
B_2g 1.00 -1.00 1.00 -1.00 1.00 -1.00 1.00 -1.00<br>B_3g 1.00 -1.00 -1.00 1.00 1.00 -1.00 -1.00 1.00<br>A_u 1.00 1.00 1.00 1.00 -1.00 -1.00 -1.00 -1.00<br>B_1u 1.00 1.00 -1.00 -1.00 -1.00 -1.00 1.00 1.00<br>
B_2u 1.00 -1.00 1.00 -1.00 -1.00 1.00 -1.00 1.00<br>B_3u 1.00 -1.00 -1.00 1.00 -1.00 1.00 1.00 -1.00<br>|<br>|<br>***********************************<br><br><br><br><br><br></font><font size="4"><span style="font-family:times new roman,serif"><br>
<br><br><br> </span></font></pre><br clear="all">~Best Regards<br>...........................................................<br>Sanjay D. Gupta<br>Research Fellow<br>Department of Physics,<br>Bhavnagar University, Bhavnagar-364 022<br>
Gujarat, Mobile-9879666643<br><a href="mailto:email%3Aguptasanjay_56@yahoo.co.in" target="_blank">email:guptasanjay_56@yahoo.co.in</a><br>...........................................................<br>