Affiliation: | aInstitute of Physics, Budapest University of Technology and Economics, H-1111, Budafoki út 8, Budapest, Hungary bFurukawa Electric Institute of Technology Ltd., H-1158 Késmárk u. 24-28, Budapest, Hungary cDepartment of Inorganic Chemistry, Budapest University of Technology and Economics, H-1521, Gellért tér 4, Budapest, Hungary |