NbN/MgO/NbN SIS tunnel junctions for sub-mm wave mixers
Conference
·
· IEEE Trans. Magn.; (United States)
OSTI ID:6044060
The authors report on the fabrication and testing of all refractory NbN/MgO/NbN SIS tunnel junctions for use as high frequency mixers. Progress in the development of techniques for the fabrication of submicron area tunnel junctions is described. Junction structures which have been investigated include mesa, crossline, and edge geometries. Using reactive sputtering techniques, NbN tunnel junctions with critical currents in excess as 10/sup 4/ A/cm/sup 2/ have been fabricated with V/sub m/ values as high as 65 mV and areas down to 0.1 ..mu..m/sup 2/. Specific capacitance measurements on NbN/MgO/NbN mesa type tunnel junctions give values in the range 60-90 fF/..mu..m/sup 2/. These SIS tunnel junctions have been integrated with antennas and coupling structures for mixer tests in a wave guide receiver at 207 GHz. Preliminary mixer results are reported.
- Research Organization:
- Jet Propulsion Lab., Pasadena, CA (US)
- OSTI ID:
- 6044060
- Report Number(s):
- CONF-880812-
- Conference Information:
- Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: 25:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
656100 -- Condensed Matter Physics-- Superconductivity
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANTENNAS
CAPACITANCE
CHALCOGENIDES
COUPLING
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
EVALUATION
FABRICATION
GEOMETRY
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATHEMATICS
NIOBIUM COMPOUNDS
NIOBIUM NITRIDES
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
REFRACTORY METAL COMPOUNDS
SPUTTERING
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
TUNNELING
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
656100 -- Condensed Matter Physics-- Superconductivity
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANTENNAS
CAPACITANCE
CHALCOGENIDES
COUPLING
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
EVALUATION
FABRICATION
GEOMETRY
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATHEMATICS
NIOBIUM COMPOUNDS
NIOBIUM NITRIDES
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
REFRACTORY METAL COMPOUNDS
SPUTTERING
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
TUNNELING