期刊論文
| 學年 | 114 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2025-10-14 |
| 作品名稱 | Bilayer germanene growth as a chiral heterostructure |
| 作品名稱（其他語言） | |
| 著者 | Ting-Yu Chen; Chih-En Hsu; Ching-Yu Hei; Yung-Ning Hsu; David Mikolas; Bo-Hong Chen; Chung-Huang Lin; Yung-Ting Lee; Cheng-Maw Cheng; Fumio Komori; Iwao Matsuda; Chung-Yu Mou; Woei Wu Pai; Hung-Chung Hsueh; S.-J. Tang |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Physical Review B 112, p.L121406 |
| 摘要 | Growing a bilayer Xene other than the well-established bilayer graphene is a tremendous challenge, but with equally great potential toward the development of new two-dimensional materials. We have used angle-resolved photoemission spectroscopy (ARPES), and scanning tunneling microscopy (STM) to investigate the growth of bilayer germanene (BLGE) on Ag(111) with the assistance of a Pb layer. AB-stacked BLGE was successfully stabilized atop a commensurate Pb(111) monolayer, itself commensurate to a 30° rotated germanene layer in quasifreestanding phase (QP) below. Surprisingly, this four-layer configuration resulted in BLGE with a lattice constant of ∼3.5 Å, which is 15% compressed relative to the freestanding counterpart. Relaxation of these four layers by density functional theory (DFT) naturally converges to the same lattice constants from measurement, despite the large compressive strain in the BLGE. ARPES spectra in two symmetry directions match those predicted by the same DFT model—in particular a characteristic eye-shaped feature resulting from the evolved Dirac cone in the ΓK BLGE direction. Thus, we have demonstrated a novel method to grow a new Xene bilayer as part of a unique heterostructure which stabilizes the bilayer against substantial compressive strain and further induces chirality. |
| 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 | Woei Wu Pai*, Hung-Chung Hsueh(薛宏中)*, and S.-J. Tang |
| 審稿制度 | 是 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/128140 ) |