WEKO3
アイテム
Synchrotron X-ray standing wave Characterization of atomic arrangement at interface between transferred graphene and α-Al2O3(0001)
https://repo.qst.go.jp/records/80998
https://repo.qst.go.jp/records/8099834d320d6-38eb-4a4c-bdd2-2fc14bf7c2e8
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-10-21 | |||||
| タイトル | ||||||
| タイトル | Synchrotron X-ray standing wave Characterization of atomic arrangement at interface between transferred graphene and α-Al2O3(0001) | |||||
| 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 |
Entani, Shiro
× Entani, Shiro× Honda, Mitsunori× Naramoto, Hiroshi× Songtian, Li× Sakai, Seiji× Shiro, Entani× Hiroshi, Naramoto× Songtian, Li× Seiji, Sakai |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Graphene is expected to be one of the most promising materials for nanoelectronics and spintronics. In most graphene-based devices, the graphene channel is placed on insulating substrates. Therefore, the study of interfacial interactions between graphene and the insulator surface is of critical importance. In this study, the vertical arrangement of graphene which is transferred on α-Al2O3(0001) has been studied by normal incidence X-ray standing wave (NIXSW) technique. The analysis of the NIXSW profile reveals that the graphene layer is located at 3.57 Å above the α-Al2O3(0001) surface, which is larger than the interlayer distance of graphite (3.356 Å). Micro-Raman spectroscopy shows that the transferred graphene has a limited spatial distribution of hole concentration. The present study shows that transferred graphene on the sapphire substrate followed by vacuum-annealing has an atomically flat surface free from residual contaminations such as organic compounds and there occurs the hole-doping in graphene. | |||||
| 書誌情報 |
Surface Science 巻 704, p. 121749, 発行日 2021-02 |
|||||
| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0039-6028 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.susc.2020.121749 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/pii/S0039602820307135 | |||||
