Superconductor-insulator transition (SIT) is a phenomenon which has intrigued scientists for several decades. Generally the transition can be induced by magnetic field or decrease of film thickness. Numerous efforts undertaken in a variety of 2D materials reveal remarkable features. However, the mechanism behind the transition is still under debate since no theory can explain yet all these experimental findings.

This project aims to reveal more about the nature of superconductor-insulator transition beyond existing knowledge. Previously we have developed a technique to simultaneously determine the geometrical structure and the shot noise of atomic-scale structures with sub-atomic special resolution. Now we work on MoN film samples close to SIT and obtain its amorphous topography and preliminary shot noise results. More measurement is underway.


Contributors: Hong Zheng
Former contributors: Dr. Markus Herz
External cooperations: Prof. Dr. Christoph Strunk
Period: since 2014