Superconducting field effect devices with thin channel layer

Details Superconducting field effect devices with thin channel layer Superconducting field effect devices with thin channel layer

1991-12-20

1993-12-28

Hille, Rolf

Active solid-state devices (e.g., transistors, solid-state diode

Thin active physical layer which is

Tunneling through region of reduced conductivity

257 33, 505 1, 505702, 427 62, H01L 3922, H01B 1200, B05D 512

Patent

active

052742490

ABSTRACT:
A superconducting field effect device includes a substrate with an epitaxial superconducting film upon it and an insulating layer above a thinner region of the film which protects the film from the atmosphere and isolates it from a gate electrode which is on the insulating layer above a channel region of the thin film, and the epitaxial film has thicker regions suitable for contact to source and drain electrodes. Gate electrodes may be isolated from and oppose both sides of the superconducting thin regions so that enhanced modulation of a current in the thin region is provided.
The invention provides high speed and high efficiency switches and modulators.

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