[Bao, Lei; Bao, Jacqueline Y. Y.; Han, Yingjie] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Xie, Li; Feng, XM; Feng, Xiumei] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Hubei, Peoples R China.
[Ma, Shihong] Fudan Univ, Dept Phys, Shanghai, Peoples R China.
[Chen, C; Chen, Cheng] Jimei Univ, Normal Coll, Xiamen, Fujian, Peoples R China.
[Zhang, Xiangqun] Zhenjiang Expt Sch, Zhenjiang, Jiangsu, Peoples R China.