1. Applied Physics DepartmentThe Hebrew University of Jerusalem Jerusalem 9190401 Israel
2. Center for Nanoscience and NanotechnologyThe Hebrew University of Jerusalem Jerusalem 9190401 Israel
3. Institute of ChemistryThe Hebrew University of Jerusalem Jerusalem 9190401 Israel
4. Magnetic Heterostructures LaboratoryInstitute of Physics, Polish Academy of Sciences Al. Lotnikow 32/46 02‐668 Warszawa Poland