Phonon-mode characterization of orthorhombic and tetragonal YBa2YCu3O7−δ single crystals by Raman spectroscopy

L. V. Gasparov; G. A. Emel’chenko; V. D. Kulakovskii; O. V. Misochko; V. B. Timofeev; E. I. Rashba

doi:10.1364/JOSAB.6.000440

Phonon-mode characterization of orthorhombic and tetragonal YBa₂YCu₃O_7−δ single crystals by Raman spectroscopy

L. V. Gasparov, G. A. Emel’chenko, V. D. Kulakovskii, O. V. Misochko, V. B. Timofeev, E. I. Rashba

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

Abstract

Phonon spectra have been studied with the use of Raman-scattering techniques in orthorhombic and tetragonal YBa2Cu3O7-δ (δ ≲ 0.8) single crystals with 16O and 18O isotopes for different light polarizations. The isotopic frequency shifts for O phonon modes corresponding to the substitution of 18O for 16O have been determined. All the O phonon modes as well as the Ag modes of Ba and Cu2 have been identified by using factor-group analysis. Relative intensities and polarizations of phonon lines have been analyzed qualitatively. We argue that the bridges connecting Cu2–O2–O3 planes to the Cu1–O1 chains produce preferential polarization of the Ag lines along the c axis.

Original language	English
Pages (from-to)	440-447
Number of pages	8
Journal	Journal of The Optical Society of America B-optical Physics
Volume	6
Issue number	3
DOIs	https://doi.org/10.1364/JOSAB.6.000440 https://doi.org/10.1364/JOSAB.6.000440
State	Published - Mar 1989
Externally published	Yes

ASJC Scopus Subject Areas

Statistical and Nonlinear Physics
Atomic and Molecular Physics, and Optics

Disciplines

Physics
Quantum Physics

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10.1364/JOSAB.6.000440

Cite this

Gasparov, L. V., Emel’chenko, G. A., Kulakovskii, V. D., Misochko, O. V., Timofeev, V. B., & Rashba, E. I. (1989). Phonon-mode characterization of orthorhombic and tetragonal YBa₂YCu₃O_7−δ single crystals by Raman spectroscopy. Journal of The Optical Society of America B-optical Physics, 6(3), 440-447. https://doi.org/10.1364/JOSAB.6.000440, https://doi.org/10.1364/JOSAB.6.000440

Gasparov, LV, Emel’chenko, GA, Kulakovskii, VD, Misochko, OV, Timofeev, VB & Rashba, EI 1989, 'Phonon-mode characterization of orthorhombic and tetragonal YBa₂YCu₃O_7−δ single crystals by Raman spectroscopy', Journal of The Optical Society of America B-optical Physics, vol. 6, no. 3, pp. 440-447. https://doi.org/10.1364/JOSAB.6.000440, https://doi.org/10.1364/JOSAB.6.000440

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title = "Phonon-mode characterization of orthorhombic and tetragonal YBa2YCu3O7−δ single crystals by Raman spectroscopy",

abstract = "Phonon spectra have been studied with the use of Raman-scattering techniques in orthorhombic and tetragonal YBa2Cu3O7-δ (δ ≲ 0.8) single crystals with 16O and 18O isotopes for different light polarizations. The isotopic frequency shifts for O phonon modes corresponding to the substitution of 18O for 16O have been determined. All the O phonon modes as well as the Ag modes of Ba and Cu2 have been identified by using factor-group analysis. Relative intensities and polarizations of phonon lines have been analyzed qualitatively. We argue that the bridges connecting Cu2–O2–O3 planes to the Cu1–O1 chains produce preferential polarization of the Ag lines along the c axis.",

author = "Gasparov, {L. V.} and Emel{\textquoteright}chenko, {G. A.} and Kulakovskii, {V. D.} and Misochko, {O. V.} and Timofeev, {V. B.} and Rashba, {E. I.}",

note = "Phonon spectra have been studied with the use of Raman-scattering techniques in orthorhombic and tetragonal YBa 2Cu 3O 7- ( δ ≲ 0.8) single crystals with 16O and 18O isotopes for different light polarizations. The isotopic frequency shifts for O phonon modes corresponding to the substitution of 18O for 16O have been determined.",

year = "1989",

month = mar,

doi = "10.1364/JOSAB.6.000440",

language = "English",

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journal = "Journal of The Optical Society of America B-optical Physics",

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AU - Gasparov, L. V.

AU - Emel’chenko, G. A.

AU - Kulakovskii, V. D.

AU - Misochko, O. V.

AU - Timofeev, V. B.

AU - Rashba, E. I.

N1 - Phonon spectra have been studied with the use of Raman-scattering techniques in orthorhombic and tetragonal YBa 2Cu 3O 7- ( δ ≲ 0.8) single crystals with 16O and 18O isotopes for different light polarizations. The isotopic frequency shifts for O phonon modes corresponding to the substitution of 18O for 16O have been determined.

PY - 1989/3

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N2 - Phonon spectra have been studied with the use of Raman-scattering techniques in orthorhombic and tetragonal YBa2Cu3O7-δ (δ ≲ 0.8) single crystals with 16O and 18O isotopes for different light polarizations. The isotopic frequency shifts for O phonon modes corresponding to the substitution of 18O for 16O have been determined. All the O phonon modes as well as the Ag modes of Ba and Cu2 have been identified by using factor-group analysis. Relative intensities and polarizations of phonon lines have been analyzed qualitatively. We argue that the bridges connecting Cu2–O2–O3 planes to the Cu1–O1 chains produce preferential polarization of the Ag lines along the c axis.

AB - Phonon spectra have been studied with the use of Raman-scattering techniques in orthorhombic and tetragonal YBa2Cu3O7-δ (δ ≲ 0.8) single crystals with 16O and 18O isotopes for different light polarizations. The isotopic frequency shifts for O phonon modes corresponding to the substitution of 18O for 16O have been determined. All the O phonon modes as well as the Ag modes of Ba and Cu2 have been identified by using factor-group analysis. Relative intensities and polarizations of phonon lines have been analyzed qualitatively. We argue that the bridges connecting Cu2–O2–O3 planes to the Cu1–O1 chains produce preferential polarization of the Ag lines along the c axis.

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