1. Department of Physics MTA-BME Lendület Spintronics Research Group (PROSPIN) Budapest University of Technology and Economics P.O. Box 91 H-1521 Budapest Hungary
2. Laboratory of Physics of Complex Matter École Polytechnique Fédérale de Lausanne Lausanne CH-1015 Switzerland
3. Department of Physics and Astronomy UCLA Los Angeles CA 90095-1547 USA
4. Centre for Energy Research Institute of Technical Physics and Materials Science Konkoly-Thege M. út 29-33 Budapest 1121 Hungary
5. Institute of Nuclear Techniques Budapest University of Technology and Economics Műegyetem rkp. 9 H-1111 Budapest Hungary