Affiliation: | (1) Ural State University, Yekaterinburg, 620083, Russia;(2) L2MP-UMR CNRS 6137, Université du Sud Toulon Var, La Garde, F-83957, France;(3) IWE Rhein.-West. Technichen Hochschule Aachen, Aachen, D-52074, Germany;(4) Institute of Solid State Physics, University of Latvia, Riga, LV-1063, Latvia |