<div dir="ltr"><div><div><div><div>Dear All,<br><br></div>I am trying to figure out how
to calculate the electron-phonon coupling coefficient for specific
modes of surface adsorbates. I tested the bulk materials, and espresso
works perfectly. Since I am only interested in some modes of surface
adsorbates, I need to specify the mode to calculate. But the calculator
skips the electron-phonon coupling part right after the linear response
calculation of phonon modes. What I did is to give nat_todo=1 and
specify the atom index in the input file for ph.x to calculate the
coupling coefficient. I went the source code of elphon.f90, and found
that it was hard coded that it will exit from the elphon calculation if
not all of the modes are calculated (IF (.NOT.done_elph(irr)) RETURN). <br>
</div>So the question is whether there is a way to specify the mode I
need. It does not make sense to calculate all the modes for substrate
atoms.<br><br></div>Thanks,<br></div>Hongliang<br clear="all"><br>-- <br><div dir="ltr"><div>Hongliang Xin<br>Postdoc<br>SUNCAT<br>
SLAC National Accelerator Laboratory<br>
Stanford University <br>Phone: (734) 474-3629<br>E-mail: <a href="mailto:hxin@umich.edu" target="_blank">hxin@slac.stanford.edu</a><br></div> <a href="mailto:hongliang06@gmail.com" target="_blank">hongliang06@gmail.com</a><br>
<div><a href="mailto:hxin@umich.edu" target="_blank"></a></div></div>
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