Dear all,

     I have some questions about the pseudopotential. I found some articles mentioned that in order to get more acurate band structure, the sX functional should be implemented. Nevertheless, the reciprocal space values of cutoff energy installed Materials studios and that of the article are different, i.e. Zn is 600 eV in the program but 680 eV for the paper so that I tried to change the number of it. Help files, as same as the article, said that 'Opium' is needed for manipulation of '.recpot'. I have been through the site <http://opium.sourceforge.net> but I couldn't download the file called Xsgrace which is the prerequisition of the installation. Moreover, I couldn't locate ".recpot" in my computer.

     In order to manipulate or make changes in those files, what should I have to do? Would you mind give me some hints to follow.

Best regards,

LEELACHAO Sirichai