<div dir="ltr">Dear all, <div><br></div><div>I want to apply e-field this structure. grap + mol. graphene stands at 0.48 <font face="Times New Roman, serif"><span style="font-size:14px;line-height:16.1000003814697px">and molecule stands at 0.70 at z direction. in this case, what must the values of emaxpos and eopreg be? or Is it correct way to apply e field? I have read the input file descriptions but it didnt give me a clear explanation. </span></font></div><span style="font-size:10.5pt;line-height:115%;font-family:"Times New Roman","serif""> <br></span><div><p class="MsoPlainText"><span style="font-family:"Times New Roman","serif"">&control<br>
calculation='relax'<br>
restart_mode='from_scratch',<br>
prefix='g_a',<br>
tstress = .true.<br>
tprnfor = .true.<br>
pseudo_dir ='****************,<br>
outdir='*********************,<br>
etot_conv_thr = 1.0E-4,<br>
forc_conv_thr = 1.0D-3,<br>
nstep = 1000 ,<br>
dt = 150,<br>
wf_collect=.true.,<br>
verbosity='high',<br>
/<br>
&system<br>
ibrav=0,celldm(1)=1.8897,<br>
nat= 65, ntyp=3,<br>
ecutwfc =35.0,<br>
ecutrho=380,<br>
occupations='smearing',<br>
smearing='mp',<br>
degauss=0.001,</span></p><p class="MsoPlainText"><span style="font-family:'Times New Roman',serif">vdw_corr=’Grimme-D2’</span></p><p class="MsoPlainText"><span style="font-family:'Times New Roman',serif">charge= -1.0</span></p>
<p class="MsoPlainText"><span style="font-family:"Times New Roman","serif""> </span><span style="font-size:9pt;font-family:'Times New Roman',serif;background-image:initial;background-repeat:initial">edir=3</span></p>
<p class="MsoPlainText"><span style="font-family:Dotum;font-size:13.3333330154419px">eamp=0.001945</span></p><p class="MsoPlainText"><span style="font-family:'Times New Roman',serif;font-size:14px;line-height:16.1000003814697px"><b> emaxpos =?</b></span></p><p class="MsoPlainText"><span style="font-family:'Times New Roman',serif;font-size:14px;line-height:16.1000003814697px"><b> eopreg =?</b></span></p>
<p class="MsoPlainText"><span style="font-family:"Times New Roman","serif""> /<br>
&electrons<br>
conv_thr = 1.0d-10,<br>
mixing_beta = 0.7,<br>
electron_maxstep=1000,<br>
mixing_mode='local-TF',<br>
/<br>
&ions<br>
ion_dynamics='bfgs'<br>
/<br>
&cell<br>
/<br>
CELL_PARAMETERS<br>
12.345814234 0.000000000 0.00000<br>
-6.172907117 10.691788754
0.00000<br>
0.000000000 0.00000
19.051143164<br>
ATOMIC_SPECIES<br>
C 12.011 C.pbe-van_ak.UPF <br>
N 14.007 N.pbe-van_ak.UPF <br>
H 1.008 H.pbe-van_ak.UPF <br>
ATOMIC_POSITIONS {crystal}<br>
C 0.066760676 0.133749415
0.488303216 0 0 0 <br>
C 0.266720611 0.133765082
0.488239472<br>*</span></p><p class="MsoPlainText"><font face="Times New Roman, serif">*</font></p><p class="MsoPlainText">*</p><p class="MsoPlainText"><span style="font-family:"Times New Roman","serif"">
H 0.821181349 0.579809532
0.700930844<br>
H 0.669410768 0.342566606
0.704718087<br>
K_POINTS {automatic}<br>
3 3 1 1 1 1<br>
</span></p></div><div><span style="font-size:10.5pt;line-height:115%;font-family:"Times New Roman","serif""><br></span></div></div>