<div dir="ltr">Dear Wien2k users,<br><br>We are running Wien2k 08.2 version on IBM AIX v 5.3 system (Uni Leoben). We are interested in effects of an external <br>electric field on splitting in the graphene. We have recovered 24 micro eV splitting due to intrinsic spin-orbit interaction <br>
in the K-point. Setting up a ramp potential of rather huge amplitudes (1000 Ry/20A) has no effect on the splitting at all. <br>I have not found relevant discussion in mailing list. Therefore, I would like to share my problem with you. <br>
<br>The graphene sheet has been placed (i) in the quarter of the unit cell width (z=0.25) and complex calculations have <br>run and; (ii) the sheet has been positioned in the origin (z=0) and real calculations have run with modified ramp <br>
potential in eramps.f within lapw0. The results we have obtained are almost the same - no change in the splitting. <br><br>My question is:<br>Is the present implementation of the external electric field suitable for monoatomic slab structures including<br>
spin-orbit coupling interaction?<br><br>Many thanks,<br>Martin Gmitra<br></div>