Dear QE users,<br><br>My first post on this list! Given the daily flow of messages, I'm glad to see that this is an active community!<br><br>I'm trying to setup a simulation of a system containing iron. In order to do it, first I'm first testing the dimer and bulk, in order to see if they are being calculated correctly.<br>
<br>I'm using the <span class="grigio"><a href="http://www.quantum-espresso.org/pseudo/1.3/UPF/Fe.pbe-nd-rrkjus.UPF" class="aranciolink">Fe.pbe-nd-rrkjus.UPF</a> pseudo from the online database, with a 3d74s1 valence configuration</span> and +1 magnetization.<br>
<br>I've obtained a dimer equilibrium bond length of 2.05 angstroms (experiment: 2.02) and a vibrational frequency of 330 cm^-1 (experiment: 300). I'm happy with these results!<br><br>Using another DFT code (OpenMX), also with GGA, I've obtained 2.10 angstroms for the equilibrium bond length and also 330 cm^-1 for the vibrational frequency.<br>
<br>What puzzles me is the system magnetization. These are the results I'm getting (in units of Bohr mag.):<br><br>Openmx - scalar relativistic: 6.62<br>Openmx - full relativistic, non collinear: 6.86<br>Quantum Espresso - : 7.14<br>
<br>Theoretical DFT literacy values: 6.00<br>Experiment: 6.5 +/- 1<br><br>My question: shouldn't those numbers be integers? If so, what could be causing this?<br><br>Any information you need, just ask.<br><br>Thank you!<br>
<br clear="all"><br>-- <br>Giovani M. Faccin<br>