= Superconducting tunnel junction
{title2=STJ}
{wiki}
Specific type of <Josephson junction>. Probably can be made tiny and in huge numbers through <photolithography>.
\Image[https://web.archive.org/web/20210124093431im_/https://upload.wikimedia.org/wikipedia/commons/thumb/8/81/Superconducting_tunnel_junction.svg/735px-Superconducting_tunnel_junction.svg.png]
{title=Illustration of a thin-film superconducting tunnel junction (STJ)}
{description=The superconducting material is light blue, the insulating tunnel barrier is black, and the substrate is green.}
{source=https://upload.wikimedia.org/wikipedia/commons/8/81/Superconducting_tunnel_junction.svg}
\Video[http://youtube.com/watch?v=-HUVGWTfaSI]
{title=Quantum Transport, Lecture 14: Josephson effects by Sergey Frolov (2013)}
{description=https://youtu.be/-HUVGWTfaSI?t=878 mentions https://en.wikipedia.org/wiki/Electron-beam_lithography[maskless electron beam lithography] being used to produce STJs.}