Semiconductor–superconductor proximity effect
A semiconductor coupled to a superconductor acquires pairing correlations.
$$\Delta_{\rm ind}\neq 0$$
Physical intuition
A semiconductor coupled to a superconductor acquires pairing correlations.
Deep dive: physical mechanism
Andreev processes transfer electron pairs across an interface and induce a superconducting gap.
What is measured experimentally?
Tunneling spectroscopy measures a proximity gap.
Assumptions, noise and limitations
A hard induced gap requires a clean interface and low subgap disorder.
Research and simulation exercise
Model a proximitized single-level dot with a pairing term.
Connect the ideas
Explore the chapter overview, learning path, and references.