Hi, <br>To my knowledge, most of bandstructure works just gave symbols of high symmetry points along k-path. If so, i think<br>the problem is mostly due to inconsistent settings for high symmetry points between you assigned to k-path and that paper's.<br>
You can check your K-path with xcrysden->Tools .<br><br>regards.<br><br><div class="gmail_quote">On Fri, Mar 6, 2009 at 12:34 AM, 潘登 <span dir="ltr"><<a href="mailto:panda.deng.pan@gmail.com">panda.deng.pan@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">The structure in paper have the sysmmetry of the space group<br>
I4/mmm(139) with Ba 2a(0 0 0) Ni 4d (0.5 0 0.25) As (0 0 0.3476).<br>
and my input are:<br>
<div><div></div><div class="h5"><br>
<br>
&control<br>
calculation = 'scf'<br>
restart_mode='from_scratch'<br>
prefix='BaNiAs',<br>
pseudo_dir = '/disk2/xgwan/Quantum-Espresso/espresso-4.0.3/pseudo/',<br>
outdir='/disk2/xgwan/tmp/'<br>
/<br>
&system<br>
ibrav=6,<br>
celldm(1)=7.7702,<br>
celldm(3)=2.806,<br>
nat=10,<br>
ntyp=3,<br>
ecutwfc = 40.0,<br>
ecutrho = 400.0,<br>
occupations= 'tetrahedra'<br>
/<br>
&electrons<br>
diagonalization = 'cg'<br>
mixing_beta = 0.7<br>
conv_thr = 1.0d-6<br>
/<br>
ATOMIC_SPECIES<br>
Ba 137.327 Ba.pbe-nsp-van.UPF<br>
Ni 58.6934 Ni.pbe-nd-rrkjus.UPF<br>
As 74.9216 As.pbe-n-van.UPF<br>
ATOMIC_POSITIONS crystal<br>
Ba 0.0000 0.0000 0.0000<br>
Ba 0.5000 0.5000 0.5000<br>
Ni 0.0 0.5 0.25<br>
Ni 0.5 0.0 0.75<br>
Ni 0.5 0.0 0.25<br>
Ni 0.0 0.5 0.75<br>
As 0.0000 0.0000 0.3476<br>
As 0.0000 0.0000 0.6524<br>
As 0.5000 0.5000 0.8476<br>
As 0.5000 0.5000 0.1524<br>
K_POINTS {automatic}<br>
8 8 8 0 0 0<br>
<br>
<br>
</div></div>Could you tell the structure I inputed are the same of that is in the<br>
paper.I compare with XCryden to Wien2k input of this structure,it<br>
seems the same.<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Hai-Ping Lan <br>Department of Electronics ,<br>Peking University , Bejing, 100871<br><a href="mailto:lanhaiping@gmail.com">lanhaiping@gmail.com</a>, <a href="mailto:hplan@pku.edu.cn">hplan@pku.edu.cn</a><br>