Laser thermal spectroscopy of highly granular NbN
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
The temperature dependence of far-infrared transmission gives 2..delta..(O), T/sub c/, and evidence of fluctuations in NbN films. Homogeneous and highly granular (R/sub D'Alembertian/ = 21 000 ..cap omega..) NbN are found to be equally strong coupled. BCS theory predicts a peak in transmission-versus-temperature curves which is observed at a reduced level in a homogeneous sample and vanishes completely in the granular material. The extinction of the peak is ascribed to zero-dimensional fluctuations near T/sub c/.
- Research Organization:
- Physics Department, Emory University, Atlanta, Georgia 30322
- OSTI ID:
- 5227634
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 25:5; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BCS THEORY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
FILMS
FLUCTUATIONS
INFRARED RADIATION
LIGHT TRANSMISSION
NIOBIUM COMPOUNDS
NIOBIUM NITRIDES
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
RADIATIONS
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VARIATIONS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BCS THEORY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
FILMS
FLUCTUATIONS
INFRARED RADIATION
LIGHT TRANSMISSION
NIOBIUM COMPOUNDS
NIOBIUM NITRIDES
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
RADIATIONS
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VARIATIONS