<div>first let me thank Ngoc Linh Nguyen for your reply. </div>
<div> the high symmetry *H-P-Gam-H-N-P-N-Gam is found in other papers, which is correct. what I feel puzzled is the coordination of high symmetry points.</div>
<div> from the web of <a href="http://www.cryst.ehu.es/cgi-bin/cryst/programs/nph-kv-list">http://www.cryst.ehu.es/cgi-bin/cryst/programs/nph-kv-list</a>, it give the crystal coordination of bcc as following ;</div>
<div>k-vector label Wyckoff position Parameters <br>CDML ITA ITA <br>GM 0,0,0 4 </div>
<div>H 1/2,-1/2,1/2 <br>P 1/4,1/4,1/4 <br>N 0,0,1/2 24 <br>and the pwscf give the following bcc basis</div>
<div> reciprocal axes: (cart. coord. in units 2 pi/a_0)<br> b(1) = ( 1.000000 0.000000 1.000000 )<br> b(2) = ( -1.000000 1.000000 0.000000 )<br> b(3) = ( 0.000000 -1.000000 1.000000 )</div>
<div>then I changed the above coordination H, P,N, into 2pi unit, they became </div>
<div> Gam(0,0,0) ,H( 1.00 -1.00,1.00), P(0.00,0.00, 0.50),N(0.00, -0.50, 0.50), when I plot the phonon dispersion using the above coordination in 2pi unit, I found the results is wrong . I just to feel puzzle why my results is wrong </div>
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<div> The correct coordination shoud be G :(0,0,0) ,H( 0.00 1.00,0.00), P(0.5,0.5, 0.50),N(0.5, 0.5, 0.00), so it is strange for me to this results</div>
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<div>-- <br>ZhouDawei<br>JiLin Universiyt ,ChangChun ,China<br><a href="mailto:zdw2000@gmail.com">zdw2000@gmail.com</a><br></div>