Hi, welcome to vasp forum, i wish it would be a good discussion flat for the researcher on calculation. And Happy New Year! -- Best Wishes ChenWeiguang ************************************************ # Chen, Weiguang # # Postgraduate, Ph. D # 75 University Road, Physics Buliding # 218 # School of Physics & Engineering # Zhengzhou University # Zhengzhou, Henan 450052 CHINA # # Tel: 86-13203730117; # E-mail:chenweiguang82@xxxxxxxxx; # chenweiguang82@xxxxxx #**********************************************