2021年8月
Electronic structure of a borophene layer in rare-earth aluminum/chromium boride and its hydrogenated derivative, borophane
Phys. Rev. Materials
- 巻
- 5
- 号
- 8
- 開始ページ
- 084007-1
- 終了ページ
- 084007-8
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevMaterials.5.084007
- 出版者・発行元
- AMER PHYSICAL SOC
We studied electronic states of borophene in a crystal of rare-earth aluminum/chromium boride and the hydrogenated sheet, borophane, successfully prepared by ion exchange and liquid exfoliation of the crystal. The layer has a boron network with five-membered and seven-membered rings. Electronic structures of all the boron-derived layers are found to be gapless by soft x-ray absorption and emission spectroscopy measurements at the B K-shell absorption edge and density functional theory calculations. The present results support the existence of a Dirac nodal loop at the Fermi level in the borophane layer with five- and seven-membered rings, predicted recently by topological calculations.
- ID情報
-
- DOI : 10.1103/PhysRevMaterials.5.084007
- ISSN : 2475-9953