作者机构:[1]College of Physics, Liaoning University, Shenyang 110036, China, [2]Department of Applied Mechanics, Beijing Institute of Technology, Beijing 100081, China
相关基金:Project supported by the National Natural Science Foundation of China (Grant Nos. 10872084 and 10472040), the Outstanding Young Talents Training Fund of Liaoning Province, China (Grant No. 3040005) and the Research Program of Higher Education of Liaoning Province, China (Grant No. 2008S098).