From: xirainbow <[email protected]>
> Is there LO-TO splitting far away from Gamma point? No. >How large is the influence range of LO-TO splitting in Brillouin zone? One >hundred percent? It depends on the macroscopic dielectric constant and Born effective charge, see any good solid state physics textbook or review paper Rev.Mod.Phys. 73, 515 (2001). It is clear that the effect is more pronounced for (polar) insulators (large band gap). Bests, Eyvaz. ------------------------------------------------------------------- Prof. Eyvaz Isaev, Department of Physics, Chemistry, and Biology (IFM), Linkoping University, Sweden Theoretical Physics Department, Moscow State Institute of Steel & Alloys, Russia, isaev at ifm.liu.se, eyvaz_isaev at yahoo.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments/20110428/1b916b3c/attachment.htm
