期刊論文
| 學年 | 106 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2017-09-22 |
| 作品名稱 | Atomic-scale visualization of surface-assisted orbital order |
| 作品名稱（其他語言） | |
| 著者 | Howon Kim; Yasuo Yoshida; Chi-Cheng Lee; Tay-Rong Chang; Horng-Tay Jeng; Hsin Lin; Yoshinori Haga; Zachary Fisk; Yukio Hasegawa |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Science Advances Vol. 3, no. 9 eaao0362 |
| 摘要 | Orbital-related physics attracts growing interest in condensed matter research, but direct real-space access of the orbital degree of freedom is challenging. We report a first, real-space, imaging of a surface-assisted orbital ordered structure on a cobalt-terminated surface of the well-studied heavy fermion compound CeCoIn5. Within small tip-sample distances, the cobalt atoms on a cleaved (001) surface take on dumbbell shapes alternatingly aligned in the [100] and [010] directions in scanning tunneling microscopy topographies. First-principles calculations reveal that this structure is a consequence of the staggered dxz-dyz orbital order triggered by enhanced on-site Coulomb interaction at the surface. This so far overlooked surface-assisted orbital ordering may prevail in transition metal oxides, heavy fermion superconductors, and other materials. |
| 關鍵字 | |
| 語言 | en_US |
| ISSN | |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 是 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/117198 ) |