作者机构:[1]Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China, [2]Key Laboratory of Metastable Materials Science and Technology, College of Science, Yanshan University, Qinhuangdao 066004, China
相关基金:Project supported by the National Natural Science Foundation of China (Grant Nos 10874145 and 60490280), the China Postdoctoral Science Foundation (Grant No 20080440014), and the Yanshan University Doctor Foundation of China (Grant No B153).