基金We thank Professor Dr. Markus Deserno （Department of Physics, Carnegie Mellon University）, Jemal Guven （Institute of Nuclear Science, Universidad Nacional Autonoma de Mexico）, and Zhan-chun Tu （Department of Physics, Beijing Normal University） for their valuable advice. This work is supported by the National Natural Science Foundation of China （No.20974078, No.21274107, and No.91127046）. The computation and simulation are partly carried out in High Performance Computing Center of Tianjin University.
