Affiliation: | (1) Rostov State University of Transport Communications, Rostov-on-Don, 344038, Russia;(2) Institute of Physics, University of Kassel, Kassel, D-34132, Germany;(3) First Institute of Physics, Justus-Liebig University of Giessen, Giessen, D-35392, Germany;(4) Department of Physics, Kaiserslautern University of Technology, Kaiserslautern, D-67653, Germany |