of;
Physical;
Science;
and;
Technology,;
Yunnan;
University,;
Kunming;
650091,;
China;
of;
Math;
and;
Physics,;
Wenshan;
University,;
Wenshan;
663000,;
China,;
of;
Solid;
State;
Physics,;
Chinese;
Academy;
of;
Sciences,;
Hefei;
230031,;
China;