1. Peter Grünberg Institut 7, Forschungszentrum Jülich GmbH and JARA-FIT, 52425 Jülich, Germany
2. RWTH Aachen University, 52056 Aachen, Germany
3. Compound Semiconductor Technology, RWTH Aachen University, 52074 Aachen, Germany
4. JARA-Institute Energy-efficient Information Technology (Green IT & PGI-10), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
5. AIXTRON SE, 52134 Herzogenrath, Germany
6. Institute of Materials in Electrical Engineering and Information Technology II, RWTH Aachen University, 52074 Aachen, Germany