Institution: | 1. Institute of Modern Physics, Northwest University, Xian 710069, China 2. Laboratory of Physico-lnorganic Chemistry, Department of Chemistry, Northwest University, Xi'an 710069, China 3. Institute of Modern Physics, Northwest University, Xian 710069, China;Laboratory of Physico-lnorganic Chemistry, Department of Chemistry, Northwest University, Xi'an 710069, China |