I think you can consider this compound as semiconductor. As far as I know, a semi-metal can be considered as an indirect semiconductor with a minus bandgap.
2009/4/23 mazouz moulay <mazouz_moulay at yahoo.fr> > Dear all, > > I perfomed a calculation on TlAs, the electronic band shows a > semi-metallic behavior, and I want to calculate the phonons dispersion, in > this case, we use the metallic option in the scf input or we consider > this compound as semiconductor in order to have the dynamical properties > (Born effective charge and the dielectric tensor)? > > Thanks you in advance. > > > > Moulay Mazouz > D?partement de Physique > Universit? des Sciences et de la Technologie d'Oran. > USTO. Oran. Alg?rie > > > > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum > > -- Y. C. Cheng Department of Physics Nanjing University Nanjing 210093 P. R. China Tel: 86-25-83592907 Email: yccheng.nju at gmail.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments/20090423/58b04c92/attachment.htm
