作者机构:[1]National Laboratory of Solid State Microstructures and Key Laboratory of Nanomaterials for Jiangsu Province, Nanjing University, Nanjing 210093, China
相关基金:Project supported by the National Basic Research Program of China (Grant Nos. 2012CB932304 and 2009CB929501) and the National Natural Science Foundation of China (Grant Nos. 11174130 and U 1232210).