| Title | Direct Observation of Ordered Configurations of Hydrogen Adatoms on Graphene |
| Authors | Lin, Chenfang Feng, Yexin Xiao, Yingdong Duerr, Michael Huang, Xiangqian Xu, Xiaozhi Zhao, Ruguang Wang, Enge Li, Xin-Zheng Hu, Zonghai |
| Affiliation | Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China. Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China. Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China. Univ Giessen, Inst Appl Phys, D-35392 Giessen, Germany. |
| Keywords | Graphene hydrogen ordered double-sided STM gap BASAL-PLANE CLUSTER MODEL GRAPHITE ADSORPTION GRAPHANE SURFACE ATOMS GAP |
| Issue Date | 2015 |
| Publisher | nano letters |
| Citation | NANO LETTERS.2015,15,(2),903-908. |
| Abstract | Ordered configurations of hydrogen adatoms on graphene have long been proposed, calculated, and searched for. Here, we report direct observation of several ordered configurations of H adatoms on graphene by scanning tunneling microscopy. On the top side of the graphene plane, H atoms in the configurations appear to stick to carbon atoms in the same sublattice. Scanning tunneling spectroscopy measurements revealed a substantial gap in the local density of states in H-contained regions as well as in-gap states below the conduction band due to the incompleteness of H ordering. These findings can be well explained by density functional theory calculations based on double-sided H configurations. In addition, factors that may influence H ordering are discussed. |
| URI | http://hdl.handle.net/20.500.11897/147427 |
| ISSN | 1530-6984 |
| DOI | 10.1021/nl503635x |
| Indexed | SCI(E) EI PubMed |
| Appears in Collections: | 物理学院 人工微结构和介观物理国家重点实验室 |
