Cryoelectronics or cryolectronics is the study of superconductivity under cryogenic conditions and its applications. It is not to be confused with cryotronics, the study of the production of superconductor materials. ...
cryoelectronics A field of engineering that studies the design and functioning of electronics systems, circuits, and devices at temperatures approaching absolute zero (0 K or -270 degrees Celsius).
the branch of electronics dealing with the application of low-temperature behavior, esp. superconductivity, to electronic devices.