1. Department of Physics, Kh. Dosmukhamedov Atyrau University Atyrau Kazakhstan
2. Laboratory of Nanotechnology, Kazakh‐British Technical University Almaty Kazakhstan
3. National Nanotechnology Laboratory of Open Type Al‐Farabi Kazakh National University Almaty Kazakhstan
4. Faculty of Electrical Engineering and Electronics, Kyoto Institute of Technology Kyoto Japan
5. Institute for Experimental and Theoretical Physics Al‐Farabi Kazakh National University Almaty Kazakhstan