1. Chair in Hybrid Nanosystems Nanoinstitut München Fakultät für Physik Ludwig‐Maximilians‐Universität München 80539 München Germany
2. Max Planck‐Institute of Microstructure Physics Halle 06120 Saale Germany
3. Departamento de Física FCEN IFIBA‐CONICET Universidad de Buenos Aires Buenos Aires C1428EGA Argentina
4. Departmento de Física Universidade Federal de Pernambuco Recife‐PE 50670–901 Brazil
5. School of Microelectronics MOE Engineering Research Center of Integrated Circuits for Next Generation Communications Southern University of Science and Technology Shenzhen 518055 China
6. Max Planck‐Institute for Chemical Physics of Solids 01187 Dresden Germany
7. The Blackett Laboratory Department of Physics Imperial College London London SW7 2AZ UK