Atomically Precise Lateral Modulation of a Two-Dimensional Electron Liquid in Anatase TiO2 Thin Films
文献类型：期刊论文
| 作者 | Bruno, F. Y.; Wang, Z.; Zhong, Z.; Walker, S. McKeown; Ristic, Z.; Ma, J. -Z.; Shi, M.; Mesot, J.; Baumberger, F.; Radovic, M. |
| 刊名 | NANO LETTERS
 |
| 出版日期 | 2017 |
| 卷号 | 17期号:4页码:2561-2567 |
| ISSN号 | 1530-6984 |
| 英文摘要 | Engineering the electronic band structure of two-dimensional electron liquids (2DELs) confined at the surface or interface of transition metal oxides is key to unlocking their full potential. Here we describe a new approach to tailoring the electronic structure of an oxide surface 2DEL demonstrating the lateral modulation of electronic states with atomic scale precision on an unprecedented length scale comparable to the Fermi wavelength. To this end, we use pulsed laser deposition to grow anatase TiO2 films terminated by a (1 x 4) in-plane surface reconstruction. Employing photostimulated chemical surface doping we induce 2DELs with tunable carrier densities that are confined within a few TiO2 layers below the surface. Subsequent in situ angle-resolved photoemission experiments demonstrate that the (1 x 4) surface reconstruction provides a periodic lateral perturbation of the electron liquid. This causes strong backfolding of the electronic bands, opening of unidirectional gaps and a saddle point singularity in the density of states near the chemical potential. |
| 公开日期 | 2017-12-25 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/13918]  |
| 专题 | 2017专题 |
| 推荐引用方式 GB/T 7714 | Bruno, F. Y.,Wang, Z.,Zhong, Z.,et al. Atomically Precise Lateral Modulation of a Two-Dimensional Electron Liquid in Anatase TiO2 Thin Films[J]. NANO LETTERS,2017,17(4):2561-2567. |
| APA | Bruno, F. Y..,Wang, Z..,Zhong, Z..,Walker, S. McKeown.,Ristic, Z..,...&Patthey, L..(2017).Atomically Precise Lateral Modulation of a Two-Dimensional Electron Liquid in Anatase TiO2 Thin Films.NANO LETTERS,17(4),2561-2567. |
| MLA | Bruno, F. Y.,et al."Atomically Precise Lateral Modulation of a Two-Dimensional Electron Liquid in Anatase TiO2 Thin Films".NANO LETTERS 17.4(2017):2561-2567. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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