1. NTNU, Center for Quantum Spintronics, Department of Physics, Høgskoleringen 5, NO-7491 Trondheim, Norway
2. SINTEF Energy Research, P.O. Box 4761 Torgarden, NO-7465 Trondheim, Norway
3. NTNU, Department of Energy and Process Engineering, NO-7465 Trondheim, Norway