Published December 8, 1986
| Version v1
Journal article
Isotope effects in the PdH system: Lattice dynamics of PdT/sub 0.7/
- 1. Institute for Materials Science and Engineering, National Bureau of Standards, Gaithersburg, Maryland 20899
Description
The quasiharmonic phonon dispersion relation of PdT/sub 0.7/ has been determined by coherent neutron scattering. Calculation of the phonon terms entering the current models for superconductivity in PdH, PdD, and PdT shows conclusively that the magnitude of the measured anharmonic frequency shifts is not sufficient to explain the reverse isotope effect in these systems. The effect of the large zero-point motion of the hydrogen isotopes on both the electronic structure and the electron-phonon interaction is estimated, and shown to be necessary to explain the experimental data
Additional details
Publishing Information
- Journal Title
- Phys. Rev. Lett.
- Journal Volume
- 57
- Journal Issue
- 23
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 2955-2958
- ISSN
- 0031-9007
- CODEN
- PRLTA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 18055794
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- COHERENT SCATTERING; DEUTERATION; DISPERSION RELATIONS; DYNAMICS; ELECTRON-PHONON COUPLING; EXPERIMENTAL DATA; HARMONIC OSCILLATORS; ISOTOPE EFFECTS; LOW TEMPERATURE; NEUTRON DIFFRACTION; PALLADIUM HYDRIDES; PALLADIUM TELLURIDES; PHONONS; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE
- Descriptors DEC
- CHALCOGENIDES; CHEMICAL REACTIONS; COUPLING; DATA; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; HYDRIDES; HYDROGEN COMPOUNDS; INFORMATION; MECHANICS; NUMERICAL DATA; PALLADIUM COMPOUNDS; PHYSICAL PROPERTIES; QUASI PARTICLES; SCATTERING; TELLURIDES; TELLURIUM COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS