Electron tunneling into superconducting ZrN
Journal Article
·
· Phys. Rev. Lett.; (United States)
We have prepared tunnel junctions on superconducting ZrN thin films using the natural oxide as a tunnel barrier. In the superconducting density of states we observed the phonon-induced structures due to the acoustic and optical phonons. The tunnel data could be analyzed by the McMillan-Rowell procedure without the need to correct for proximity effects. From the resulting Eliashberg function it was concluded that the optical phonons are coupled slightly more strongly to the electrons than the acoustic phonons.
- Research Organization:
- Kernforschungszentrum Karlsruhe, Institut fuer Nukleare Festkoerperhysik, D-7500 Karlsruhe, Federal Republic of Germany
- OSTI ID:
- 7045175
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:26; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHEMICAL REACTIONS
DATA
ENERGY-LEVEL DENSITY
EXPERIMENTAL DATA
FILMS
INFORMATION
JUNCTIONS
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXIDATION
PHONONS
PNICTIDES
PROXIMITY EFFECT
QUASI PARTICLES
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
TYPE-II SUPERCONDUCTORS
ULTRALOW TEMPERATURE
ZIRCONIUM COMPOUNDS
ZIRCONIUM NITRIDES
360603* -- Materials-- Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHEMICAL REACTIONS
DATA
ENERGY-LEVEL DENSITY
EXPERIMENTAL DATA
FILMS
INFORMATION
JUNCTIONS
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXIDATION
PHONONS
PNICTIDES
PROXIMITY EFFECT
QUASI PARTICLES
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
TYPE-II SUPERCONDUCTORS
ULTRALOW TEMPERATURE
ZIRCONIUM COMPOUNDS
ZIRCONIUM NITRIDES