[1] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
[2] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA
[3] Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China
[4] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA
[5] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA