First-principles study of electronic and magnetic structure in layered cobaltite Na0.75CoO2

H. Okabe; M. Matoba; T. Kyomen; M. Itoh

doi:10.1063/1.1691211

First-principles study of electronic and magnetic structure in layered cobaltite Na_0.75CoO₂

H. Okabe, M. Matoba, T. Kyomen, M. Itoh

Department of Applied Physics and Physico-Informatics

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

13 Citations (Scopus)

Abstract

The electronic and magnetic structure in layered cobaltite Na _0.75CoO₂ were studied. The LDA+U method, where a Hubbard type on-site Coulomb interaction was added to the local-density approximation (LDA), was used for the calculation of the electronic structure of the sodium cobaltite. It was observed that the magnetic moments of Co ions were strongly influenced by the bond distances between the Co and Na ions. The magnetic ground state of the cobaltite was found to the a spin-glass-like, short-range ordered state resulting from randomly distributed magnetic Co ions.

Original language	English
Pages (from-to)	6831-6833
Number of pages	3
Journal	Journal of Applied Physics
Volume	95
Issue number	11 II
DOIs	https://doi.org/10.1063/1.1691211
Publication status	Published - 2004 Jun 1

ASJC Scopus subject areas

General Physics and Astronomy

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abstract = "The electronic and magnetic structure in layered cobaltite Na 0.75CoO2 were studied. The LDA+U method, where a Hubbard type on-site Coulomb interaction was added to the local-density approximation (LDA), was used for the calculation of the electronic structure of the sodium cobaltite. It was observed that the magnetic moments of Co ions were strongly influenced by the bond distances between the Co and Na ions. The magnetic ground state of the cobaltite was found to the a spin-glass-like, short-range ordered state resulting from randomly distributed magnetic Co ions.",

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AU - Okabe, H.

AU - Matoba, M.

AU - Kyomen, T.

AU - Itoh, M.

PY - 2004/6/1

Y1 - 2004/6/1

N2 - The electronic and magnetic structure in layered cobaltite Na 0.75CoO2 were studied. The LDA+U method, where a Hubbard type on-site Coulomb interaction was added to the local-density approximation (LDA), was used for the calculation of the electronic structure of the sodium cobaltite. It was observed that the magnetic moments of Co ions were strongly influenced by the bond distances between the Co and Na ions. The magnetic ground state of the cobaltite was found to the a spin-glass-like, short-range ordered state resulting from randomly distributed magnetic Co ions.

AB - The electronic and magnetic structure in layered cobaltite Na 0.75CoO2 were studied. The LDA+U method, where a Hubbard type on-site Coulomb interaction was added to the local-density approximation (LDA), was used for the calculation of the electronic structure of the sodium cobaltite. It was observed that the magnetic moments of Co ions were strongly influenced by the bond distances between the Co and Na ions. The magnetic ground state of the cobaltite was found to the a spin-glass-like, short-range ordered state resulting from randomly distributed magnetic Co ions.

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JO - Journal of Applied Physics

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IS - 11 II

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First-principles study of electronic and magnetic structure in layered cobaltite Na_0.75CoO₂

Abstract

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