Dear all After I used bands.x to extact the eigenval of spined-caculated,I don't know the result is how to derived ? Does it the average of up-eigenval and down-eigenval ? Any advice will be appreciated . sincerely wjwang Xiangtan University -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments/20080830/3e00b952/attachment.htm