1. Institute of Materials in Electrical Engineering 2 (IWE2) RWTH Aachen University Sommerfeldstraße 24 52074 Aachen Germany
2. Key Laboratory of Microelectronic Devices and Circuits (MOE) School of Integrated Circuits Peking University Beijing 100871 China
3. Chair for Micro‐ and Nanoelectronics Department of Electrical Engineering and Information Technology TU Dortmund University Martin‐Schmeisser‐Weg 4‐6 D‐44227 Dortmund Germany
4. School of Electronic and Computer Engineering Peking University Shenzhen 518055 China
5. Center for Brain Inspired Intelligence Chinese Institute for Brain Research (CIBR) Beijing 102206 China
6. Peter Grünberg Institute (PGI‐7) Forschungszentrum Jülich Wilhelm‐Johnen‐Straße 52425 Jülich Germany
7. Institute of Electrochemistry and Energy Systems “Acad. E. Budewski” Bulgarian Academy of Sciences Acad. G. Bonchev 10, 1113 Sofia Bulgaria