Characterization of NbN films and tunnel junctions
Creators
- 1. Center for Space Microelectronics Technology, Jet Propulsion Lab., California Inst. of Technology, Pasadena, CA (United States)
Description
This paper discusses properties of NbN films and NbN/MgO/NbN tunnel junctions. NbN junctions are being developed for use in high-frequency, superconductor-insulator-superconductor (SIS) quasiparticle mixers. To properly design mixer circuits, junction and film properties need to be characterized. The specific capacitance of NbN/MgO/NbN junctions has been measured as a function of the product of the normal-state resistance and the junction area (RmA), and it is found to vary by more than a factor of two (35--85 fF/Μm2) over the range of RmA measured (1000--50 Ωμm2). This variation is important because the specific capacitance determines the RC speed of the tunnel junction at a given RmA value. The magnetic penetration depth of NbN films deposited under different conditions is also measured
Additional details
Publishing Information
- Journal Title
- IEEE Transactions on Magnetics
- Journal Volume
- 27
- Journal Issue
- 2
- Series
- IEEE Trans. Magn.
- Journal Page Range
- 3196-3199
- ISSN
- 0018-9464
- CODEN
- IEMGA
Conference
- Title
- 1990 applied superconductivity conference.
- Dates
- 24-28 Sep 1990.
- Place
- Snowmass, CO (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 23021046
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CAPACITANCE; DESIGN; ELECTRICAL INSULATION; FABRICATION; MICROELECTRONICS; NIOBIUM NITRIDES; PENETRATION DEPTH; QUASI PARTICLES; SUPERCONDUCTING FILMS; SUPERCONDUCTING JUNCTIONS; SUPERCONDUCTIVITY; TUNNEL EFFECT
- Descriptors DEC
- ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; FILMS; NIOBIUM COMPOUNDS; NITRIDES; NITROGEN COMPOUNDS; PHYSICAL PROPERTIES; PNICTIDES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Secondary number(s)
- CONF-900944--.