A mixed-space approach to first-principles calculations of phonon frequencies for polar materials This article has been downloaded from IOPscience. Please scroll down to see the full text article. 2010 J. Phys.: Condens. Matter 22 202201 (http://iopscience.iop.org/0953-8984/22/20/202201) Download details: IP Address: 128.118.162.74 The article was downloaded on 03/11/2010 at 16:03 Please note that terms and conditions apply. View the table of contents for this issue, or go to the journal homepage for more Home Search Collections Journals About Contact us My IOPscience