Pressure dependence of phonon energies at critical points in the Brillouin zone in KTaO3 measured with differential second order raman scattering

Y. Yacoby; F. Cerdeira; M. Schmidt; W. B. Holzapfel

doi:10.1016/0038-1098(74)90658-9

Pressure dependence of phonon energies at critical points in the Brillouin zone in KTaO₃ measured with differential second order raman scattering

Y. Yacoby^*, F. Cerdeira, M. Schmidt, W. B. Holzapfel

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Wavelength modulated Raman scattering was used to study the effects of pressure on the second order spectrum of KTaO₃. The pressure results lend support to previous identifications of structures in the second order differential Raman spectrum in terms of pairs of phonons from critical points in the Brillouin zone. Using these identification mode Grüneisen parameters are obtained for several vibrational modes. Strong anharmonic behavior of of the TA(X) mode is observed when we correlate the results from pressure measurements with previous studies of the effects of temperature.

Original language	English
Pages (from-to)	1325-1329
Number of pages	5
Journal	Solid State Communications
Volume	14
Issue number	12
DOIs	https://doi.org/10.1016/0038-1098(74)90658-9
State	Published - 15 Jun 1974
Externally published	Yes

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title = "Pressure dependence of phonon energies at critical points in the Brillouin zone in KTaO3 measured with differential second order raman scattering",

abstract = "Wavelength modulated Raman scattering was used to study the effects of pressure on the second order spectrum of KTaO3. The pressure results lend support to previous identifications of structures in the second order differential Raman spectrum in terms of pairs of phonons from critical points in the Brillouin zone. Using these identification mode Gr{\"u}neisen parameters are obtained for several vibrational modes. Strong anharmonic behavior of of the TA(X) mode is observed when we correlate the results from pressure measurements with previous studies of the effects of temperature.",

author = "Y. Yacoby and F. Cerdeira and M. Schmidt and Holzapfel, {W. B.}",

year = "1974",

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AU - Yacoby, Y.

AU - Cerdeira, F.

AU - Schmidt, M.

AU - Holzapfel, W. B.

PY - 1974/6/15

Y1 - 1974/6/15

N2 - Wavelength modulated Raman scattering was used to study the effects of pressure on the second order spectrum of KTaO3. The pressure results lend support to previous identifications of structures in the second order differential Raman spectrum in terms of pairs of phonons from critical points in the Brillouin zone. Using these identification mode Grüneisen parameters are obtained for several vibrational modes. Strong anharmonic behavior of of the TA(X) mode is observed when we correlate the results from pressure measurements with previous studies of the effects of temperature.

AB - Wavelength modulated Raman scattering was used to study the effects of pressure on the second order spectrum of KTaO3. The pressure results lend support to previous identifications of structures in the second order differential Raman spectrum in terms of pairs of phonons from critical points in the Brillouin zone. Using these identification mode Grüneisen parameters are obtained for several vibrational modes. Strong anharmonic behavior of of the TA(X) mode is observed when we correlate the results from pressure measurements with previous studies of the effects of temperature.

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Pressure dependence of phonon energies at critical points in the Brillouin zone in KTaO₃ measured with differential second order raman scattering

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