<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Dear all<br> I am working on (100) and (110) <span class="yshortcuts" id="lw_1271252027_0">free surfaces</span> of cubic <span>NaCl</span> type
MnSe (alpha-MnSe) with aniferromagnetic order in 111 direction. Since
alpha-MnSe is a semiconductor, I like to passivate the Mn and Se
dangling bonds at the free surfaces by using <span style="border-bottom: 1px dashed rgb(0, 102, 204); cursor: pointer;" class="yshortcuts" id="lw_1271252027_1">Hydrogen atoms</span>.
Unfortunately it is not clear to me which type of H pseudopotential has
to be used for passivation of surface Mn and Se atoms. Should I use
(positive/negative) charged hydrogen atoms or neutral H atoms are enough
for passivation. Moreover, how many Hydrogen atoms are needed for the
passivation of surface Mn and Se dangling bonds?<br>
<br>Your kind explanations and comments on these questions are highly apprecaited.<br><br>With best regards<br>Peiman <br>======================================<br>
Peiman Amiri<br>
Computational Condensed Matter Research Lab<br>
Physics Department, Isfahan University of Technology, Iran<br>
<br>
Tel lab: +98 311 391 3733 Fax Office: +98311 391 3746 <br>
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