Determination of the penetration depth of type II superconducting films
Conference
·
· IEEE Trans. Magn.; (United States)
OSTI ID:6340322
The superconducting penetration depth lambda(0) at T = 0 was determined for NbN films from the temperature dependence of the frequency of a tunnel-diode-driven resonant circuit whose inductive element was a thin film meander line of superconducting NbN. The BCS temperature dependence of the penetration depth lambda(t) was assumed. Measurements were made on two stoichiometric NbN films 310 nm and 465 nm thick and a nitrogen-deficient film 55 nm thick. The values of lambda(0) obtained were 276, 280, and 175 nm respectively. These values are compared with other determinations of lambda(0). This method provides a simple method of obtaining lambda(0) for thin films where other techniques may not be practical.
- Research Organization:
- Francis Bitter National Magnet Laboratory, Cambridge, MA
- OSTI ID:
- 6340322
- Report Number(s):
- CONF-840937-
- Conference Information:
- Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: MAG 21:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DEPTH
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FILMS
MEASURING METHODS
NIOBIUM COMPOUNDS
NIOBIUM NITRIDES
NITRIDES
NITROGEN COMPOUNDS
PENETRATION DEPTH
PHYSICAL PROPERTIES
PNICTIDES
REFRACTORY METAL COMPOUNDS
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THICKNESS
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
TYPE-II SUPERCONDUCTORS
360104 -- Metals & Alloys-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DEPTH
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FILMS
MEASURING METHODS
NIOBIUM COMPOUNDS
NIOBIUM NITRIDES
NITRIDES
NITROGEN COMPOUNDS
PENETRATION DEPTH
PHYSICAL PROPERTIES
PNICTIDES
REFRACTORY METAL COMPOUNDS
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THICKNESS
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
TYPE-II SUPERCONDUCTORS