1. School of Physics and Engineering Faculty of Secure Information Technologies ITMO University Kronverksky Pr. 49, bldg. A St. Petersburg 197101 Russia
2. Laboratory of Scanning Probe Microscopy and Spectroscopy Institute for Analytical Instrumentation RAS St. Petersburg 198095 Russia
3. Center for Nanotechnologies Alferov University Khlopina str. 8 St. Petersburg 194021 Russia
4. SCAMT Institute, ITMO University Khlopina str. 8 St. Petersburg 197101 Russia
5. Institut Jean Lamour, CNRS – Université de Lorraine UMR CNRS 7198 Nancy F‐54011 France