1. Department of Physics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
2. L-NESS, Dipartimento di Fisica, Politecnico di Milano, Polo di Como, ViaAnzani 42, 22100 Como, Italy
3. Centre de Nanosciences et de Nanotechnologies, Université Paris Sud, CNRS, Université Paris Saclay, 91120 Palaiseau, France