Phonon dispersion in Nb3Sn

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It is shown that the extended softening in k space of the [111] transverse acoustic phonon in Nb3Sn seen recently by neutron measurements is in agreement with the predictions of a phenomenological Landau description of the structural phase transition in the A-15 compounds. This indicates the feasibility of a calculation of the partial phonon density of states of modes directly coupled to the order parameter driving the structural transition, as a function of temperature.

Original languageEnglish (US)
Pages (from-to)4023-4026
Number of pages4
JournalPhysical Review B
Issue number8
StatePublished - 1979
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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