Observation of normal-metal phonons with proximity-effect tunneling

Journal Article · Mon Jun 28 00:00:00 EDT 1976 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.36.1552· OSTI ID:7347955

Chaikin, P M; Hansma, P K

We have measured the tunneling characteristics (dV/dI and d/sup 2/V/dI/sup 2/ versus V) of thin film junctions of the form Al-I-M-Pb, where M is Ag, Cu, or Al. These tunneling characteristics have dips at voltages correspondng to peaks in the phonon density of states of M and peaks at voltages corresponding to the peaks in the phonon density of states of Pb. From the amplitude of the dips due to the phonons of M we can crudely estimate the electron-phonon coupling constant lambda/subM/ for Al and Cu. (AIP)

• Research Organization: Department of Physics, University of California, Los Angeles, California 90024
• OSTI ID: 7347955
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 36:26; ISSN PRLTA
• 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
ALUMINIUM
COPPER
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FILMS
LEAD
METALS
PHONONS
PHYSICAL PROPERTIES
PROXIMITY EFFECT
QUASI PARTICLES
SILVER
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TRANSITION ELEMENTS
TUNNEL EFFECT