Institution: | 1. School of Semiconductor and Chemical Engineering, Semiconductor Physics Research Center (SPRC) Chonbuk National University, Jeonju 54896, Republic of Korea;2. Department of Nano-Optical Engineering, Korea Polytechnic University, Siheung 15073, Republic of Korea;3. Department of Physics, Y.S.R. Engineering College of Yogivemana University, Proddatur-516 360, India;4. Department of Physics, Sri Venkateswara University, Tirupati-517502, India;1. Institute of Microelectronics, School of Physical Science and Technology, Lanzhou University, South Tianshui Road 222#, Lanzhou 730000, People''s Republic of China;2. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, South Tianshui Road 222#, Lanzhou 730000, People''s Republic of China;3. Department of Physics, Shaoxing University, Shaoxing 312000, People''s Republic of China |