Scanning probe microscopy of superconducting proximity effect in van der Waals heterostructures

Van der Waals (vdW) materials exhibit a wide range of electronic phenomena and phases such as charge density wave, metal-insulator transition, magnetism and superconductivity. Heterostructures based on these materials enable studies of the proximity effects of correlated phases in ultra clean atomically smooth interfaces. In this talk, we present our spatially resolved measurement of induced superconducting gap and coherence length, in single and a few layer vdW materials proximitized by superconducting niobium diselenide in zero and finite magnetic fields.