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  1. 原著論文

Post-growth annealing effects on charge and spin excitations in Nd2−xCexCuO4

https://repo.qst.go.jp/records/81981
https://repo.qst.go.jp/records/81981
9b50b4dd-da6e-4fe2-a5e3-84ae5d6395a0
Item type 学術雑誌論文 / Journal Article(1)
公開日 2021-02-24
タイトル
タイトル Post-growth annealing effects on charge and spin excitations in Nd2−xCexCuO4
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
アクセス権
アクセス権 metadata only access
アクセス権URI http://purl.org/coar/access_right/c_14cb
著者 Ishii, Kenji

× Ishii, Kenji

WEKO 1012779

Ishii, Kenji

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Asano, Shun

× Asano, Shun

WEKO 1012780

Asano, Shun

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Ashida, Masumi

× Ashida, Masumi

WEKO 1012781

Ashida, Masumi

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Fujita, Masaki

× Fujita, Masaki

WEKO 1012782

Fujita, Masaki

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Yu, Biqiong

× Yu, Biqiong

WEKO 1012783

Yu, Biqiong

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Greven, Martin

× Greven, Martin

WEKO 1012784

Greven, Martin

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Okamoto, Jun

× Okamoto, Jun

WEKO 1012785

Okamoto, Jun

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Di-Jing, Huang

× Di-Jing, Huang

WEKO 1012786

Di-Jing, Huang

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Kenji, Ishii

× Kenji, Ishii

WEKO 1012787

en Kenji, Ishii

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抄録
内容記述タイプ Abstract
内容記述 We report a Cu K- and L3-edge resonant inelastic x-ray scattering study of charge and spin excitations of bulk Nd2−xCexCuO4, with a focus on post-growth annealing effects. For the parent compound Nd2CuO4 (x = 0), a clear charge-transfer gap is observed in the as-grown state, whereas the charge excitation spectra indicate that electrons are doped in the annealed state. This is consistent with the observation that annealed thin-film and polycrystalline samples of RE2CuO4 (RE = rare earth) can become metallic and superconducting at sufficiently high electron concentrations without Ce doping. For x = 0.16, a Ce concentration for which it is known that oxygen reduction destroys long-range antiferromagnetic order and induces superconductivity, we find that the high-energy spin excitations of non-superconducting as-grown and superconducting annealed crystals are nearly identical. This finding is in stark contrast to the significant changes in the low-energy spin excitations previously observed via neutron scattering.
書誌情報 Physical Review Materials

巻 5, 号 2, p. 024803, 発行日 2021-02
出版者
出版者 APS
ISSN
収録物識別子タイプ ISSN
収録物識別子 2475-9953
DOI
識別子タイプ DOI
関連識別子 10.1103/PhysRevMaterials.5.024803
関連サイト
識別子タイプ URI
関連識別子 https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.5.024803
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