Department of Physics at National Cheng Kung University Departmental Office: Cheng Kung Campus Physics Building-II 　 　 　 TEL: 886-6-2757575#65200                 FAX: 886-6-2747995 ADDress: Physics Department, National Cheng Kung University                1 Ta-Hsueh Road                Tainan, Taiwan 70101, ROC Email: em65200@email.ncku.edu.tw