<div>Dear all:</div>
<div> When I use espresso-3.1 to generate full relativistic pseudopotentials of Ga and As, I find some problems:</div>
<div> 1. I choose nlcc=.False., and get the pseudopotentials of Ga and As. However, when I use them to calculate the band structure of GaAs,</div>
<div> I find that I must write both lspinorb=.true. and noncolin=.true. in the input file. If not, the band split at Gamma point will not appear. Why?</div>
<div> 2. Use the pseudopotntials, whether choose nlcc=.true. or not, the gap between valence band and conduct band becomes only 0.6 eV. </div>
<div> I know that should be 1.4eV in GaAs, Why? </div>
<div> ( I also re-calculate with changing the matching radius, but get the same problems)</div>
<div> </div>
<div> Could anyone tell me, is there any critical mistakes and how should I solve this problem?</div>
<div> </div>
<div> Thank you in advance,</div>
<div> Ma Fengjie</div>
<div> </div>
<div>------------------------------------------------------------------------</div>
<div> &input<br> title='As',<br> zed=33.,<br> rel=2,<br> rlderiv=2.50,<br> eminld=-4.0,<br> emaxld=4.0,<br> deld=0.02,<br> nld=5,<br> iswitch=3,<br> config='[Ar] 3d10 4s2 4p3 4d-1'<br> dft='LDA',
<br> &<br> &inputp<br> pseudotype=2,<br> lloc=2,<br> nlcc =.true.,<br> file_pseudopw='Asrel.RRKJ3',<br> &<br>5<br>4S 1 0 2.00 0.00 2.20 2.20 0.50<br>4P 2 1 2.00 0.00 2.20 2.20 0.50<br>4P 2 1
1.00 0.00 2.20 2.20 1.50<br>4D 3 2 0.00 0.05 2.30 2.30 1.50<br>4D 3 2 0.00 0.05 2.30 2.30 2.50<br>--------------------------------------------------------------------------------</div>
<div> &input<br> title='Ga',<br> zed=31.,<br> rel=2,<br> rlderiv=2.50,<br> eminld=-4.0,<br> emaxld=4.0,<br> deld=0.02,<br> nld=5,<br> iswitch=3,<br> config='[Ar] 3d10 4s2 4p0.33 4p0.67 4d-1'<br> dft='LDA',
<br> &<br> &inputp<br> pseudotype=2,<br> lloc=2,<br> nlcc =.true.,<br> file_pseudopw='Ga.RRKJ3',<br> &<br>5<br>4S 1 0 2.00 0.00 2.40 2.40 0.50<br>4P 2 1 0.33 0.00 1.60 1.60 0.50<br>4P 2 1
0.67 0.00 1.60 1.60 1.50<br>4D 3 2 0.00 0.05 2.70 2.70 1.50<br>4D 3 2 0.00 0.05 2.70 2.70 2.50<br>--------------------------------------------------------------------------------</div>