Calculated electron-phonon contributions to phonon linewidths and to the electronic mass enhancement in Pd

Journal Article · Fri Jun 15 04:00:00 EDT 1979 · Phys. Rev., B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.19.6010· OSTI ID:6262275

Pinski, F J; Butler, W H

This paper presents a calculation of the linewidths of phonons in Pd owing to decay into electron-hole pairs. Korringa-Kohn-Rostoker energies and wave functions are used with the rigid-muffin-tin approximation (for the electron-phonon matrix element). The linewidths of the longitudinal (zeta00) phonons show a sharp maximum which is in qualitative agreement with the recent experimental observations of Youngblood et al. Relatively large linewidths are calculated for a transverse mode (T/sub 1/) along the (110) direction, which are in good agreement with the previous experiment of Miiller. Both the matrix element and the joint density of states at the Fermi energy contribute to the magnitude of the calculated linewidths. The electron-phonon contribution to the electronic mass enhancement is calculated to be 0.41. This result is used to estimate the contribution due to paramagnetic fluctuations.

• Research Organization: Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794
• OSTI ID: 6262275
• Journal Information: Phys. Rev., B: Condens. Matter; (United States), Journal Name: Phys. Rev., B: Condens. Matter; (United States) Vol. 19:12; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
EFFECTIVE MASS
ELECTRON-PHONON COUPLING
ELEMENTS
FLUCTUATIONS
INTERACTIONS
LINE WIDTHS
MAGNETISM
MASS
METALS
MUFFIN-TIN POTENTIAL
PAIR PRODUCTION
PALLADIUM
PARAMAGNETISM
PHONONS
PLATINUM METALS
POTENTIALS
QUASI PARTICLES
TRANSITION ELEMENTS
VARIATIONS