1. Centre for Nanoscience and Nanotechnology, Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
2. Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom
3. Institute for Quantum Materials and Technologies, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
4. High Field Magnet Laboratory, Radboud University, 6525 ED Nijmegen, Netherlands