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Journal Article

c-axis lattice dynamics in Bi-based cuprate superconductors

MPS-Authors
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Kovaleva,  N. N.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Boris,  A. V.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Holden,  T.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Ulrich,  C.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;

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Liang,  B.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;
Scientific Facility Crystal Growth (Masahiko Isobe), Max Planck Institute for Solid State Research, Max Planck Society;

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Lin,  C. T.
Scientific Facility Crystal Growth (Masahiko Isobe), Max Planck Institute for Solid State Research, Max Planck Society;

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Keimer,  B.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Bernhard,  C.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Kovaleva, N. N., Boris, A. V., Holden, T., Ulrich, C., Liang, B., Lin, C. T., et al. (2004). c-axis lattice dynamics in Bi-based cuprate superconductors. Physical Review B, 69(5): 054511.


Cite as: https://hdl.handle.net/21.11116/0000-000E-FFAB-3
Abstract
We present the results of a systematic study of the c-axis lattice
dynamics in single-layer Bi2Sr2CuO6 (Bi2201), bilayer Bi2Sr2CaCu2O8
(Bi2212), and trilayer Bi2Sr2Ca2Cu3O10 (Bi2223) cuprate
superconductors. Our study is based on both experimental data obtained
by spectral ellipsometry on single crystals and theoretical
calculations. The calculations are carried out within the framework of
a classical shell model, which includes long-range Coulomb interactions
and short-range interactions of the Buckingham form in a system of
polarizable ions. Using the same set of shell model parameters for
Bi2201, Bi2212, and Bi2223, we calculate the frequencies of the
Brillouin-zone center phonon modes of A(2u) symmetry and suggest the
phonon mode eigenvector patterns. We achieve good agreement between the
calculated A(2u) eigenfrequencies and the experimental values of the
c-axis TO phonon frequencies which allows us to make a reliable phonon
mode assignment for all three Bi-based cuprate superconductors. We also
present the results of our shell model calculations for the Gamma-point
A(1g) symmetry modes in Bi2201, Bi2212, and Bi2223 and suggest an
assignment that is based on published experimental Raman spectra. The
superconductivity-induced phonon anomalies recently observed in the
c-axis infrared and resonant Raman scattering spectra in trilayer
Bi2223 are consistently explained with the suggested assignment.