<html><head></head><body><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div>Dear QE users,</div><div><br></div><div>My final goal is to obtain phonon dispersion of Ti3C2, however at the very beginning I get the following error:</div><div><br></div><div><span>Error in scalartorealdp</span></div><div><span>Too few elements found</span><br></div><div><span><br></span></div><div><span>Here is my input:</span></div><div><span><br></span></div><div><span><span><div>&control</div><div> calculation='vc-relax',</div><div> restart_mode='from_scratch',</div><div> pseudo_dir = '.',</div><div> tprnfor=.true.,</div><div> forc_conv_thr= 1.0d-7,</div><div> etot_conv_thr= 1.0d-8,</div><div>/</div><div>&system</div><div> ibrav = 0,</div><div> nat= 5,</div><div> ntyp= 2,</div><div> ecutwfc = 70,</div><div> ecutrho = 630,</div><div> occupations= 'smearing',</div><div> smearing= 'mp',</div><div> degauss = 0.01,</div><div>/</div><div>&electrons</div><div> diagonalization= 'cg',</div><div> conv_thr = 1.0d-12,</div><div>/</div><div>&ions</div><div> ion_dynamics = 'bfgs',</div><div>/</div><div>&cell</div><div> cell_dynamics = 'bfgs',</div><div>/</div><div>ATOMIC_SPECIES</div><div> C 12.01 C.pz-van_ak.UPF</div><div> Ti 47.867 Ti.pz-sp-van_ak.UPF</div><div>ATOMIC_POSITIONS crystal</div><div>C 0.6666666666666643 0.3333333333333357 0.5810337763008668</div><div>C 0.3333333333333357 0.6666666666666643 0.4189662236991332</div><div>Ti 0.0000000000000000 0.0000000000000000 0.5000000000000000</div><div>Ti 0.3333333333333357 0.6666666666666643 0.6450254278856442</div><div>Ti 0.6666666666666643 0.3333333333333357 0.3549745721143557</div><div>CELL_PARAMETERS angstrom</div><div> 2.6883951985018508 -1.5514427239055619 0.0000111303329820</div><div> -0.0006087877982130 3.1039398992248510 -0.0000197140399680</div><div> -0.0000075989189900 0.0001016192400290 16.0000000145770898</div><div>K_POINTS AUTOMATIC</div><div> 10 10 4 0 0 0</div><div><br></div><div>I assume there is something wrong with pseudopotentials but could not figure how to solve it. Could you please point out the problem.</div><div><br></div><div>Thanks,</div><div>Ali </div><div><br></div></span><br></span></div></div></body></html>