1. Department of Physics, Budapest University of Technology and Economics, Budafoki út 8, 1111 Budapest, Hungary
2. MTA-BME Condensed Matter Physics Research Group, Budapest University of Technology and Economics, Budafoki út 8, 1111 Budapest, Hungary
3. Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla tér 1, 6720 Szeged, Hungary
4. Department of Material and Biological Chemistry, Graduate School of Science and Engineering, Yamagata University, 1-4-12 Kojirakawa, Yamagata 990-8560, Japan
5. Faculty of Science, Graduate School of Science and Engineering, Yamagata University, 1-4-12 Kojirakawa, Yamagata 990-8560, Japan
6. Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Béla tér 1, 6720 Szeged, Hungary