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Superconducting InGaAs junction field-effect transistors with Nb electrodes

Journal Article · · Applied Physics Letters; (USA)
DOI:https://doi.org/10.1063/1.102166· OSTI ID:5365852
; ; ; ; ;  [1]
  1. IBM Research Division, T. J. Watson Research Center, P. O. Box 218, Yorktown Heights, New York 10598 (US)
We describe the design, fabrication, and characterization of superconducting In{sub 0.47}Ga{sub 0.53}As junction field-effect transistors (JFETs) with Nb source and drain electrodes. In{sub 0.47}Ga{sub 0.53}As has the advantage of combining large coherence length and high Schottky barrier transmission, making it a very attractive material on which to base superconducting FETs. At large voltages these devices behave as normal FETs in either enhancement or depletion modes, while at small voltages they act as Josephson junctions or super-Schottky diodes. Both normal and super- currents are controlled by the gate.
OSTI ID:
5365852
Journal Information:
Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 55:18; ISSN APPLA; ISSN 0003-6951
Country of Publication:
United States
Language:
English