Raman-active phonons and their doping dependence in Pb-based cuprate superconductors

Masato Kakihana; Minoru Osada; Atsuyoshi Inoue; Takashi Noji; Masatsune Kato; Yoji Koike; Mikael Käll; Lars Börjesson

Raman-active phonons and their doping dependence in Pb-based cuprate superconductors

Masato Kakihana^*, Minoru Osada, Atsuyoshi Inoue, Takashi Noji, Masatsune Kato, Yoji Koike, Mikael Käll, Lars Börjesson

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

The phonon Raman spectra of (Pb₂Cu)Sr₂Y_1-xCa_xCu ₂O_8+d (Pb3212), (Pb₂Cu)Sr_0.9La_1.1CuO_6+d (Pb3201), and (Pb_0.5Cu_0.5)Sr₂YCu₂O_7+d (Pd1212) are investigated and phonon assignments compatible with the layer stacking sequences found in these Pb-based cuprate superconductors are proposed. In particular, the assignment of the 480- and 570-cm^-1 phonons to oxygen in the PbO and SrO layers, respectively, is established. In the case of Pb3212 we find that the intensities of the CuO₂-plane phonons decrease with increasing carrier concentration. This effect appears to be, at least partly, due to an interaction between the CuO₂-plane phonons and Raman scattering associated with conduction carriers.

Original language	English
Pages (from-to)	6316-6319
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	60
Issue number	9
Publication status	Published - 1999
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

Cite this

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title = "Raman-active phonons and their doping dependence in Pb-based cuprate superconductors",

abstract = "The phonon Raman spectra of (Pb2Cu)Sr2Y1-xCaxCu 2O8+d (Pb3212), (Pb2Cu)Sr0.9La1.1CuO6+d (Pb3201), and (Pb0.5Cu0.5)Sr2YCu2O7+d (Pd1212) are investigated and phonon assignments compatible with the layer stacking sequences found in these Pb-based cuprate superconductors are proposed. In particular, the assignment of the 480- and 570-cm-1 phonons to oxygen in the PbO and SrO layers, respectively, is established. In the case of Pb3212 we find that the intensities of the CuO2-plane phonons decrease with increasing carrier concentration. This effect appears to be, at least partly, due to an interaction between the CuO2-plane phonons and Raman scattering associated with conduction carriers.",

author = "Masato Kakihana and Minoru Osada and Atsuyoshi Inoue and Takashi Noji and Masatsune Kato and Yoji Koike and Mikael K{\"a}ll and Lars B{\"o}rjesson",

year = "1999",

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journal = "Physical Review B - Condensed Matter and Materials Physics",

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TY - JOUR

T1 - Raman-active phonons and their doping dependence in Pb-based cuprate superconductors

AU - Kakihana, Masato

AU - Osada, Minoru

AU - Inoue, Atsuyoshi

AU - Noji, Takashi

AU - Kato, Masatsune

AU - Koike, Yoji

AU - Käll, Mikael

AU - Börjesson, Lars

PY - 1999

Y1 - 1999

N2 - The phonon Raman spectra of (Pb2Cu)Sr2Y1-xCaxCu 2O8+d (Pb3212), (Pb2Cu)Sr0.9La1.1CuO6+d (Pb3201), and (Pb0.5Cu0.5)Sr2YCu2O7+d (Pd1212) are investigated and phonon assignments compatible with the layer stacking sequences found in these Pb-based cuprate superconductors are proposed. In particular, the assignment of the 480- and 570-cm-1 phonons to oxygen in the PbO and SrO layers, respectively, is established. In the case of Pb3212 we find that the intensities of the CuO2-plane phonons decrease with increasing carrier concentration. This effect appears to be, at least partly, due to an interaction between the CuO2-plane phonons and Raman scattering associated with conduction carriers.

AB - The phonon Raman spectra of (Pb2Cu)Sr2Y1-xCaxCu 2O8+d (Pb3212), (Pb2Cu)Sr0.9La1.1CuO6+d (Pb3201), and (Pb0.5Cu0.5)Sr2YCu2O7+d (Pd1212) are investigated and phonon assignments compatible with the layer stacking sequences found in these Pb-based cuprate superconductors are proposed. In particular, the assignment of the 480- and 570-cm-1 phonons to oxygen in the PbO and SrO layers, respectively, is established. In the case of Pb3212 we find that the intensities of the CuO2-plane phonons decrease with increasing carrier concentration. This effect appears to be, at least partly, due to an interaction between the CuO2-plane phonons and Raman scattering associated with conduction carriers.

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M3 - Article

AN - SCOPUS:0012389137

SN - 0163-1829

VL - 60

SP - 6316

EP - 6319

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 9

ER -

Raman-active phonons and their doping dependence in Pb-based cuprate superconductors

Abstract

ASJC Scopus subject areas

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