Effect of Na content and hydration on the excitation spectrum of the cobaltite NaxCoO2·yH2O

P. Lemmens; V. Gnezdilov; N. N. Kovaleva; K. Y. Choi; H. Sakurai; E. Takayama-Muromachi; K. Takada; T. Sasaki; F. C. Chou; D. P. Chen; C. T. Lin; B. Keimer

doi:10.1088/0953-8984/16/11/041

Effect of Na content and hydration on the excitation spectrum of the cobaltite Na_xCoO₂·yH₂O

P. Lemmens, V. Gnezdilov, N. N. Kovaleva, K. Y. Choi, H. Sakurai, E. Takayama-Muromachi, K. Takada, T. Sasaki, F. C. Chou, D. P. Chen, C. T. Lin, B. Keimer

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Abstract

We report on a Raman scattering study of the superconducting cobaltite Na_xCoO₂·yH₂O as function of Na content and hydration (x ≈ 1/3, 3/4 and y ≈ 0, 2/3, 4/3). The observed scattering intensity is analysed in terms of lattice strain, structural misfit and disorder. Hydration, due to the intercalation of one or two H₂O layers, releases a part of this strain. Our Raman data suggest a connection between disorder on the partly occupied Na sites and the narrow phase space of superconductivity.

Original language	English
Pages (from-to)	S857-S865
Journal	Journal of Physics Condensed Matter
Volume	16
Issue number	11 SPEC. ISS.
DOIs	https://doi.org/10.1088/0953-8984/16/11/041
State	Published - 24 Mar 2004
Externally published	Yes

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Lemmens, P., Gnezdilov, V., Kovaleva, N. N., Choi, K. Y., Sakurai, H., Takayama-Muromachi, E., Takada, K., Sasaki, T., Chou, F. C., Chen, D. P., Lin, C. T., & Keimer, B. (2004). Effect of Na content and hydration on the excitation spectrum of the cobaltite Na_xCoO₂·yH₂O. Journal of Physics Condensed Matter, 16(11 SPEC. ISS.), S857-S865. https://doi.org/10.1088/0953-8984/16/11/041

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title = "Effect of Na content and hydration on the excitation spectrum of the cobaltite NaxCoO2·yH2O",

abstract = "We report on a Raman scattering study of the superconducting cobaltite NaxCoO2·yH2O as function of Na content and hydration (x ≈ 1/3, 3/4 and y ≈ 0, 2/3, 4/3). The observed scattering intensity is analysed in terms of lattice strain, structural misfit and disorder. Hydration, due to the intercalation of one or two H2O layers, releases a part of this strain. Our Raman data suggest a connection between disorder on the partly occupied Na sites and the narrow phase space of superconductivity.",

author = "P. Lemmens and V. Gnezdilov and Kovaleva, \{N. N.\} and Choi, \{K. Y.\} and H. Sakurai and E. Takayama-Muromachi and K. Takada and T. Sasaki and Chou, \{F. C.\} and Chen, \{D. P.\} and Lin, \{C. T.\} and B. Keimer",

year = "2004",

month = mar,

day = "24",

doi = "10.1088/0953-8984/16/11/041",

language = "English",

volume = "16",

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Lemmens, P, Gnezdilov, V, Kovaleva, NN, Choi, KY, Sakurai, H, Takayama-Muromachi, E, Takada, K, Sasaki, T, Chou, FC, Chen, DP, Lin, CT & Keimer, B 2004, 'Effect of Na content and hydration on the excitation spectrum of the cobaltite Na_xCoO₂·yH₂O', Journal of Physics Condensed Matter, vol. 16, no. 11 SPEC. ISS., pp. S857-S865. https://doi.org/10.1088/0953-8984/16/11/041

TY - JOUR

T1 - Effect of Na content and hydration on the excitation spectrum of the cobaltite NaxCoO2·yH2O

AU - Lemmens, P.

AU - Gnezdilov, V.

AU - Kovaleva, N. N.

AU - Choi, K. Y.

AU - Sakurai, H.

AU - Takayama-Muromachi, E.

AU - Takada, K.

AU - Sasaki, T.

AU - Chou, F. C.

AU - Chen, D. P.

AU - Lin, C. T.

AU - Keimer, B.

PY - 2004/3/24

Y1 - 2004/3/24

N2 - We report on a Raman scattering study of the superconducting cobaltite NaxCoO2·yH2O as function of Na content and hydration (x ≈ 1/3, 3/4 and y ≈ 0, 2/3, 4/3). The observed scattering intensity is analysed in terms of lattice strain, structural misfit and disorder. Hydration, due to the intercalation of one or two H2O layers, releases a part of this strain. Our Raman data suggest a connection between disorder on the partly occupied Na sites and the narrow phase space of superconductivity.

AB - We report on a Raman scattering study of the superconducting cobaltite NaxCoO2·yH2O as function of Na content and hydration (x ≈ 1/3, 3/4 and y ≈ 0, 2/3, 4/3). The observed scattering intensity is analysed in terms of lattice strain, structural misfit and disorder. Hydration, due to the intercalation of one or two H2O layers, releases a part of this strain. Our Raman data suggest a connection between disorder on the partly occupied Na sites and the narrow phase space of superconductivity.

UR - https://www.scopus.com/pages/publications/12144287196

U2 - 10.1088/0953-8984/16/11/041

DO - 10.1088/0953-8984/16/11/041

M3 - Article

AN - SCOPUS:12144287196

SN - 0953-8984

VL - 16

SP - S857-S865

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 11 SPEC. ISS.

ER -

Effect of Na content and hydration on the excitation spectrum of the cobaltite Na_xCoO₂·yH₂O

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