1. Chair in Hybrid Nanosystems, Nano Institute Munich, Department of Physics, Ludwig-Maximilians-Universität München, 80539 Munich, Germany
2. Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil
3. School of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia
4. Department of Physics, Imperial College London, London SW7 2AZ, United Kingdom