Acoustical activity in tellurium

Acoustical activity of the single crystal Te has been studied by measuring the splitting of the degeneracy of transverse acoustical waves propagating along the high symmetry direction, using the coherent inelastic neutron scattering technique. A linear relation between this splitting ( Δv) and the r...

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Veröffentlicht in:	Solid state communications 1989-12, Vol.72 (10), p.1027-1031
Hauptverfasser:	Sher, Z, Zhao, J, Lin, Q, Yu, J, Yi, C
Format:	Artikel
Sprache:	eng
Schlagworte:	Acoustical properties of solids Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Mechanical and acoustical properties of condensed matter Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Acoustical activity of the single crystal Te has been studied by measuring the splitting of the degeneracy of transverse acoustical waves propagating along the high symmetry direction, using the coherent inelastic neutron scattering technique. A linear relation between this splitting ( Δv) and the reduced wave vector ( q) was found in the region of q = 0.125 to the boundary of the Brillouin zone; but for q < 0.125, it seems that a quadratic relation predicted by theory was shown. A discussion of these results is also made.
ISSN:	0038-1098 1879-2766
DOI:	10.1016/0038-1098(89)90621-2