1. Department of Physics and i3N—Institute for Nanostructures, Nanomodulation and Nanofabrication, University of Aveiro, Aveiro 3810-193, Portugal
2. CeNTI—Centre for Nanotechnologies and Smart Materials, R. Fernando Mesquita, 2785, Vila Nova de Famalicão 4760-034, Portugal
3. Department of Molecular Physics, Lodz University of Technology, Zeromskiego 116, Lodz 90-924, Poland