A tunnel junction separates two conducting electrodes by a thin barrier through which Electrons undergo quantum tunnelling.
A tunnel junction is a type of electronic junction that allows for quantum tunneling of charge carriers, typically electrons, between two conductive regions. It is characterized by the presence of a thin insulating barrier (often just a few nanometers thick) that separates two superconductors or a superconductor and a normal conductor.
New to topics? Read the docs here!