Schottky barrierPronunciation: /ˈʃɒtki/Definition of Schottky barrier noun Electronics an electrostatic depletion layer formed at the junction of a metal and a semiconductor, which causes it to act as an electrical rectifier. Origin: 1940s: named after Walter Schottky (1886–1976), German physicistSchottky barrier in other Oxford dictionaries Definition of Schottky barrier in the US English dictionary