Evolution of the physical properties with Na content in the cobalt oxide superconductors Nax CoO2 · 1.3 H2 O

K. Matano; G. q. Zheng; J. Cmaidalka; Y. Sun; R. L. Meng; C. W. Chu

doi:10.1016/j.physb.2006.01.480

Evolution of the physical properties with Na content in the cobalt oxide superconductors Na_x CoO₂ · 1.3 H₂ O

K. Matano, G. q. Zheng, J. Cmaidalka, Y. Sun, R. L. Meng, C. W. Chu

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

Abstract

We report measurements on the cobalt oxide superconductors Na_x CoO₂ · 1.3 H₂ O over a wide Na content range x = 0.25 - 0.34, using X-ray diffraction, susceptibility and ⁵⁹Co nuclear quadrupole resonance (NQR) techniques. We find that T_c increases with decreasing x but reaches to a plateau for x {less-than or slanted equal to} 0.28, which correlates closely with the NQR frequency that measures the occupancy of the Co 3d-orbitals.

Original language	English
Pages (from-to)	871-872
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	378-380
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2006.01.480
Publication status	Published - May 1 2006

Keywords

NQR
Na CoO · H O
Superconductivity
Triangular lattice

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2006.01.480

Cite this

@article{60238da414a847a3a42fce9a4a69e93f,

title = "Evolution of the physical properties with Na content in the cobalt oxide superconductors Nax CoO2 · 1.3 H2 O",

abstract = "We report measurements on the cobalt oxide superconductors Nax CoO2 · 1.3 H2 O over a wide Na content range x = 0.25 - 0.34, using X-ray diffraction, susceptibility and 59Co nuclear quadrupole resonance (NQR) techniques. We find that Tc increases with decreasing x but reaches to a plateau for x {less-than or slanted equal to} 0.28, which correlates closely with the NQR frequency that measures the occupancy of the Co 3d-orbitals.",

keywords = "NQR, Na CoO · H O, Superconductivity, Triangular lattice",

author = "K. Matano and Zheng, {G. q.} and J. Cmaidalka and Y. Sun and Meng, {R. L.} and Chu, {C. W.}",

note = "Funding Information: This work was supported in part by research grants from MEXT, NSF, the T. L. L. Temple Foundation, the John and Rebecca Moores Endowment, and DoE. ",

year = "2006",

month = may,

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doi = "10.1016/j.physb.2006.01.480",

language = "English",

volume = "378-380",

pages = "871--872",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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TY - JOUR

T1 - Evolution of the physical properties with Na content in the cobalt oxide superconductors Nax CoO2 · 1.3 H2 O

AU - Matano, K.

AU - Zheng, G. q.

AU - Cmaidalka, J.

AU - Sun, Y.

AU - Meng, R. L.

AU - Chu, C. W.

N1 - Funding Information: This work was supported in part by research grants from MEXT, NSF, the T. L. L. Temple Foundation, the John and Rebecca Moores Endowment, and DoE.

PY - 2006/5/1

Y1 - 2006/5/1

N2 - We report measurements on the cobalt oxide superconductors Nax CoO2 · 1.3 H2 O over a wide Na content range x = 0.25 - 0.34, using X-ray diffraction, susceptibility and 59Co nuclear quadrupole resonance (NQR) techniques. We find that Tc increases with decreasing x but reaches to a plateau for x {less-than or slanted equal to} 0.28, which correlates closely with the NQR frequency that measures the occupancy of the Co 3d-orbitals.

AB - We report measurements on the cobalt oxide superconductors Nax CoO2 · 1.3 H2 O over a wide Na content range x = 0.25 - 0.34, using X-ray diffraction, susceptibility and 59Co nuclear quadrupole resonance (NQR) techniques. We find that Tc increases with decreasing x but reaches to a plateau for x {less-than or slanted equal to} 0.28, which correlates closely with the NQR frequency that measures the occupancy of the Co 3d-orbitals.

KW - NQR

KW - Na CoO · H O

KW - Superconductivity

KW - Triangular lattice

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