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Author Bakulin, A. S. ♦ Overhauser, A. W. ♦ Kaiser, H. ♦ Werner, S. A. ♦ Fernandez-Baca, J. A. ♦ Smith, H. G.
Sponsorship (US)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher The American Physical Society
Language English
Subject Keyword PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ♦ INDIUM ♦ NEUTRONS ♦ PHONONS ♦ SCATTERING ♦ SHEAR
Abstract The phonon spectrum of indium along [111], measured by inelastic neutron scattering, is reported. The two shear modes at the zone-boundary point (1/2, 1/2, 1/2) are split slightly (on account of a 7.5% tetragonal distortion). They have very low frequencies, {approx}0.7 and 1.0 THz, compared to the longitudinal mode, {approx}3.4 THz. These measurements verify the theoretical dispersion predicted by the dynamic pseudopotential theory of phonons for free-electron-like metals.
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 2001-02-01
Publisher Place United States
Journal Physical Review B
Volume Number 63
Issue Number 5


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