Experimental study of the superconducting order parameter and its temperature dependence in novel multiple-band superconductors using tunneling techniques.
Estimation of the gap symmetry, coupling constants, partial band parameters from the experiment.
We use a unique break-junction technique in order to create Josephson SIS and Andreev SNS nanojunctions (S – superconductor, N – normal metal, I - insulator). The spectroscopy of such junctions provides direct and high-resolution probe of the superconducting order parameter, its symmetry and temperature dependence, those crucial for understanding the mechanisms of unconventional superconductivity.
Our studies are partially made in collaboration with Russian (MSU, IP SB RAS) and foreign (IFW Dresden, Bern University) institutions, and supported by Russian Science Foundation, Ministry of Higher Education and Science, Russian Foundation for Basic Research, and Russian Academy of Sciences.