Raman scattering of Pb-based high-Tc superconducting oxides

Masato Kakihana; Minoru Osada; Ichiro Nagai; Takashi Noji; Masatsune Kato; Yoji Koike

Raman scattering of Pb-based high-Tc superconducting oxides

Masato Kakihana, Minoru Osada, Ichiro Nagai, Takashi Noji, Masatsune Kato, Yoji Koike

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

Abstract

Raman spectra of (Pb₂Cu)Sr₂Y_1-xCa_xCu₂O_8+δ (Pb3212), (Pb₂Cu)Sr_0.9La_1.1CuO_6+δ (Pb3201), and (Pb_0.5Cu_0.5)Sr₂YCu₂O_7+δ (Pb1212) were studied and vibrational assignments in harmony with the layer stacking sequences found in these Pb-based high-T_c superconducting oxides were proposed. In particular, the assignment of the 480- and 580-cm^-1. Raman bands to oxygen in the PbO and SrO layers, respectively, was unambiguously established. In the case of Pb3212 we found that the intensities of modes connected to the CuO₂-plane variations decreased with increasing carrier concentration. This effect was attributed to the increased metallic screening in the CuO₂ planes that can be expected in the hole-rich Ca-doped samples.

Original language	English
Pages (from-to)	999-1003
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	46
Issue number	9
Publication status	Published - 1999 Sept
Externally published	Yes

ASJC Scopus subject areas

Mechanical Engineering
Metals and Alloys

Cite this

@article{6d9af68fc2a94f39995b15ace036e9bb,

title = "Raman scattering of Pb-based high-Tc superconducting oxides",

abstract = "Raman spectra of (Pb2Cu)Sr2Y1-xCaxCu2O8+δ (Pb3212), (Pb2Cu)Sr0.9La1.1CuO6+δ (Pb3201), and (Pb0.5Cu0.5)Sr2YCu2O7+δ (Pb1212) were studied and vibrational assignments in harmony with the layer stacking sequences found in these Pb-based high-Tc superconducting oxides were proposed. In particular, the assignment of the 480- and 580-cm-1. Raman bands to oxygen in the PbO and SrO layers, respectively, was unambiguously established. In the case of Pb3212 we found that the intensities of modes connected to the CuO2-plane variations decreased with increasing carrier concentration. This effect was attributed to the increased metallic screening in the CuO2 planes that can be expected in the hole-rich Ca-doped samples.",

author = "Masato Kakihana and Minoru Osada and Ichiro Nagai and Takashi Noji and Masatsune Kato and Yoji Koike",

year = "1999",

month = sep,

language = "English",

volume = "46",

pages = "999--1003",

journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

issn = "0532-8799",

publisher = "Funtai Funamtsu Yakin Kyokai/Japan Soc. of Powder Metallurgy",

number = "9",

}

TY - JOUR

T1 - Raman scattering of Pb-based high-Tc superconducting oxides

AU - Kakihana, Masato

AU - Osada, Minoru

AU - Nagai, Ichiro

AU - Noji, Takashi

AU - Kato, Masatsune

AU - Koike, Yoji

PY - 1999/9

Y1 - 1999/9

N2 - Raman spectra of (Pb2Cu)Sr2Y1-xCaxCu2O8+δ (Pb3212), (Pb2Cu)Sr0.9La1.1CuO6+δ (Pb3201), and (Pb0.5Cu0.5)Sr2YCu2O7+δ (Pb1212) were studied and vibrational assignments in harmony with the layer stacking sequences found in these Pb-based high-Tc superconducting oxides were proposed. In particular, the assignment of the 480- and 580-cm-1. Raman bands to oxygen in the PbO and SrO layers, respectively, was unambiguously established. In the case of Pb3212 we found that the intensities of modes connected to the CuO2-plane variations decreased with increasing carrier concentration. This effect was attributed to the increased metallic screening in the CuO2 planes that can be expected in the hole-rich Ca-doped samples.

AB - Raman spectra of (Pb2Cu)Sr2Y1-xCaxCu2O8+δ (Pb3212), (Pb2Cu)Sr0.9La1.1CuO6+δ (Pb3201), and (Pb0.5Cu0.5)Sr2YCu2O7+δ (Pb1212) were studied and vibrational assignments in harmony with the layer stacking sequences found in these Pb-based high-Tc superconducting oxides were proposed. In particular, the assignment of the 480- and 580-cm-1. Raman bands to oxygen in the PbO and SrO layers, respectively, was unambiguously established. In the case of Pb3212 we found that the intensities of modes connected to the CuO2-plane variations decreased with increasing carrier concentration. This effect was attributed to the increased metallic screening in the CuO2 planes that can be expected in the hole-rich Ca-doped samples.

UR - http://www.scopus.com/inward/record.url?scp=0033185534&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033185534&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0033185534

SN - 0532-8799

VL - 46

SP - 999

EP - 1003

JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

IS - 9

ER -

Raman scattering of Pb-based high-Tc superconducting oxides

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this