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Graphene/Half-Metallic Heusler Alloy: A Novel Heterostructure toward High-Performance Graphene Spintronic Devices
https://repo.qst.go.jp/records/78028
https://repo.qst.go.jp/records/78028b39f08e5-6a8d-4153-aa90-93b80cf83d3f
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-12-17 | |||||
| タイトル | ||||||
| タイトル | Graphene/Half-Metallic Heusler Alloy: A Novel Heterostructure toward High-Performance Graphene Spintronic Devices | |||||
| 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 |
Songtian, Li
× Songtian, Li× V. Larionov, Konstantin× I. Popov, Zakhar× Watanabe, Takahiro× Amemiya, Kenta× Entani, Shiro× V. Avramov, Pavel.× Sakuraba, Yuya× Naramoto, Hiroshi× B. Sorokin, Pavel× Sakai, Seiji× Songtian, Li× Shiro, Entani× Seiji, Sakai |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Involving graphene into spin-valve (SV) structures has attracted great attention due to its extraordinary spin transport and essential physical properties useful for advanced spintronic devices. Graphene/ferromagnet heterostructure-based vertical SV is expected to offer large magnetoresistance effect without impairing the electrical conductivity, which enables higher speed and lower power consumption operation of magnetic memory devices. Herein, we report the synthesis and spin-dependent electronic properties of a novel heterostructure which consists of single-layer graphene (SLG) and half-metallic Co2Fe(Ge0.5Ga0.5) (CFGG) Heusler alloy ferromagnet as a promising building block for graphene-based SV. The growth of high quality SLG with complete coverage was demonstrated by ultra-high vacuum chemical vapor deposition on a magnetron-sputtered single crystalline CFGG thin film. A quasi-freestanding nature of SLG and robust magnetism of CFGG at the SLG/CFGG interface was revealed through depth-resolved x-ray magnetic circular dichroism spectroscopy. Density functional theory calculation results indicate that the inherent properties of SLG and CFGG such as the linear Dirac band and half-metallicity are preserved in the vicinity of the interface. These findings indicate the SLG/CFGG heterostructure possesses distinctive advantage over other reported graphene/ferromagnets heterostructures, for realizing effective transport of highly spin-polarized electrons in graphene-based vertical SV and other spintronic devices. | |||||
| 書誌情報 |
Advanced Materials 巻 32, 号 6, p. 1905734, 発行日 2019-12 |
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| 出版者 | ||||||
| 出版者 | Wiley-VCH | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1521-4095 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1002/adma.201905734 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.201905734 | |||||
