Affiliation: | Department of Physics, Xi'an Polytechnic University, Xi'an 710048, China;Department of Physics, Xi'an Polytechnic University, Xi'an 710048, China;Suzhou-CAS Semiconductors Integrated Technology Research Center, Suzhou 215021, China;Suzhou-CAS Semiconductors Integrated Technology Research Center, Suzhou 215021, China;Department of Physics, Xi'an Polytechnic University, Xi'an 710048, China;Department of Physics, Xi'an Polytechnic University, Xi'an 710048, China |