作者机构:[1]Department of Physics, Jiangxi Normal University, Nanchang 330027, China, [2]Department of Physics, Center for Optoelectronics Materials and Devices, Zhejiang Sci-Teeh University, Hangzhou 310018, China
相关基金:Project supported by the National Natural Science Foundation of China (Grant Nos 10604023 and 50802089), Science Foundation of Department of Education of Jiangxi Province (Grant No 2007-121). Siqi Shi is also supported by Qianjiang Talent Project (Grant No 2007R10028) and Natural Science Foundation of Zhejiang Province (Grant No Y407188).