Testing the phonon spectrum of metallic chromium with the nuclear-resonance photon scattering technique

D. Levant, R. Moreh, O. Shahal

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The nuclear-resonance photon-scattering cross section σs from 50Cr in a metallic form was studied as a function of temperature in the range 15-300 K. The value of σs was used for deducing the effective temperature Te which is related to a weighted average of the phonon spectrum of metallic Cr. This Te is also a measure of the total zero-point kinetic energy of the lattice and was used to define another Debye temperature FTHETA0; its value for metallic Cr was measured and found to be FTHETA0=510±20 K. This value is higher by about 10% than that obtained from the known phonon spectrum deduced by inelastic neutron scattering. A similar deviation occurs in other elements. The reason for this deviation of the values of Te and hence of FTHETA0 obtained by the nuclear-resonance photon-scattering technique and by inelastic neutron scattering is discussed.

Original languageEnglish
Pages (from-to)386-389
Number of pages4
JournalPhysical Review B
Volume44
Issue number1
DOIs
StatePublished - 1 Jan 1991

ASJC Scopus subject areas

  • Condensed Matter Physics

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