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  1. 原著論文

High-density magnetic-vacancy inclusion in Co2MnGa single crystal probed by spin-polarized positron annihilation spectroscopy

https://repo.qst.go.jp/records/84832
https://repo.qst.go.jp/records/84832
9b471b76-195b-482f-90f1-2d4b6eb3caea
Item type 学術雑誌論文 / Journal Article(1)
公開日 2021-10-19
タイトル
タイトル High-density magnetic-vacancy inclusion in Co2MnGa single crystal probed by spin-polarized positron annihilation spectroscopy
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 Atsumi, Miyashita

× Atsumi, Miyashita

WEKO 1023432

Atsumi, Miyashita

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Masaki, Maekawa

× Masaki, Maekawa

WEKO 1023433

Masaki, Maekawa

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Yoko, Shimoyama

× Yoko, Shimoyama

WEKO 1023434

Yoko, Shimoyama

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Noriaki, Seko

× Noriaki, Seko

WEKO 1023435

Noriaki, Seko

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Atsuo, Kawasuso

× Atsuo, Kawasuso

WEKO 1023436

Atsuo, Kawasuso

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Rie, Umetsu

× Rie, Umetsu

WEKO 1023437

Rie, Umetsu

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Atsumi, Miyashita

× Atsumi, Miyashita

WEKO 1023438

en Atsumi, Miyashita

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Masaki, Maekawa

× Masaki, Maekawa

WEKO 1023439

en Masaki, Maekawa

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Yoko, Shimoyama

× Yoko, Shimoyama

WEKO 1023440

en Yoko, Shimoyama

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Noriaki, Seko

× Noriaki, Seko

WEKO 1023441

en Noriaki, Seko

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Atsuo, Kawasuso

× Atsuo, Kawasuso

WEKO 1023442

en Atsuo, Kawasuso

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抄録
内容記述タイプ Abstract
内容記述 Co2MnGa is a Weyl semimetal exhibiting giant anomalous Hall and Nernst effects. Using spin-polarized positron annihilation spectroscopy, we examined a Bridgman-grown Co2MnGa single crystal with a nearly perfect L21-ordered structure and a reference Co2MnAl polycrystal with a Mn-Al-disordered B2 structure. We found that a large amount of magnetic vacancies (more than 100 ppm) were included in the Co2MnGa crystal but not the Co2MnAl crystal. We discuss possible reasons for the inclusion of vacancies, the role of vacancies in the development of the ordered structure, and the electronic states associated with the vacancies. Towards the development of Co2MnGa-based devices, the manners for reducing vacancies as well as the influence of vacancies on the electrical transport properties should be considered.
書誌情報 Journal of Physics: Condensed Matter

巻 34, 号 4, p. 045701, 発行日 2021-11
出版者
出版者 IOP Publishing
ISSN
収録物識別子タイプ ISSN
収録物識別子 0953-8984
DOI
識別子タイプ DOI
関連識別子 10.1088/1361-648X/ac3304
関連サイト
識別子タイプ URI
関連識別子 https://iopscience.iop.org/article/10.1088/1361-648X/ac3304
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