Proximity electron tunneling spectroscopy. III. Electron-Phonon coupling in the Nb-Zr system

Journal Article · Mon Sep 01 04:00:00 EDT 1980 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00119514· OSTI ID:6917304

Wolf, E L; Noer, R J; Arnold, G B

The technique of McMillan-Rowell tunneling spectroscopy, extended by a method of proximity junctions to poorly oxidizing materials, is applied to study electron-phonon coupling in Nb/sub 1-x/Zr/sub x/ at x=0.25, corresponding to the maximum T/sub c/ in the Nb-Zr alloy system. The resulting ..cap alpha../sup 2/F(..omega..) function provides lambda=1.3 for the alloy, and indicates that the primary benefit to superconductivity upon alloying arises from softening of the effective phonon spectrum.

• Research Organization: Ames Laboratory: USDOE and Department of Physics, Iowa State University, Ames, Iowa
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6917304
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 40:5; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
AUGER ELECTRON SPECTROSCOPY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON SPECTROSCOPY
ELECTRON-PHONON COUPLING
ENERGY GAP
NIOBIUM ALLOYS
PHONONS
PHYSICAL PROPERTIES
PROXIMITY EFFECT
QUASI PARTICLES
SPECTROSCOPY
SUPERCONDUCTIVITY
TUNNEL EFFECT
ZIRCONIUM ALLOYS