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Spin polarization of graphene on Co2FeGe0.5Ga0.5(001) observed by spin-polarized surface positronium spectroscopy
https://repo.qst.go.jp/records/80257
https://repo.qst.go.jp/records/802572ae717a1-b3ee-4984-aadd-c881c8846c71
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-07-31 | |||||
| タイトル | ||||||
| タイトル | Spin polarization of graphene on Co2FeGe0.5Ga0.5(001) observed by spin-polarized surface positronium 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 |
Miyashita, Atsumi
× Miyashita, Atsumi× Songtian, Li× Sakai, Seiji× Maekawa, Masaki× Kawasuso, Atsuo× Miyashita, Atsumi× Songtian, Li× Sakai, Seiji× Maekawa, Masaki× Kawasuso, Atsuo |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Following previous work on graphene on Ni(111) and Co(0001) surfaces [Phys. Rev. B 97, 195405 (2018)], the spin polarization of graphene on a Co2FeGe0.5Ga0.5(CFGG)(001) surface was examined using spin-polarized surface positronium spectroscopy. The graphene was found to be magnetically insulated from the CFGG(001) even after heat treatment, which increased the spin polarizations of graphene on Ni(111) and Co(0001). First-principles calculations indicated that graphene is weakly bound to the CFGG(001) surface mainly through the van der Waals interaction, and consequently the interlayer distance between graphene and the CFGG(001) surface is greater (∼3Å) than that between graphene and Ni(111) or Co(0001) (∼2Å). The weak hybridization between graphene and CFGG(001) sufficiently reduces the spin polarization in graphene, which enables the magnetic insulation of graphene from CFGG. | |||||
| 書誌情報 |
Physical Review B 巻 102, 号 4, p. 045425-1-045425-4, 発行日 2020-07 |
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| 出版者 | ||||||
| 出版者 | American Physical Society | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2469-9950 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1103/PhysRevB.102.045425 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://link.aps.org/doi/10.1103/PhysRevB.102.045425 | |||||
