Warping effects in the band and angular-momentum structures of the topological insulator Bi2Te3
Physical Review B 84 巻 24 号
245435- 頁
2011 発行
アクセス数 : 1299 件
ダウンロード数 : 269 件
今月のアクセス数 : 1 件
今月のダウンロード数 : 1 件
この文献の参照には次のURLをご利用ください : https://ir.lib.hiroshima-u.ac.jp/00033903
| ファイル情報(添付) | |
| タイトル ( eng ) |
Warping effects in the band and angular-momentum structures of the topological insulator Bi2Te3
|
| 作成者 |
Jung Wonsig
Kim Yeongkwan
Kim Beomyoung
Koh Yoonyoung
Kim Chul
Matsunami Masaharu
Kimura Shin-ichi
Arita Masashi
Han Jung Hoon
Kim Juyoung
Cho Beongki
Kim Changyoung
|
| 収録物名 |
Physical Review B
|
| 巻 | 84 |
| 号 | 24 |
| 開始ページ | 245435 |
| 抄録 |
We performed angle-resolved photoemission (ARPES) experiments on Bi2Te3 with circularly polarized light. ARPES data show very strong circular dichroism, indicating the existence of orbital angular momentum (OAM). Moreover, the alignment of OAM is found to have a strong binding energy dependence. Such energy dependence comes from a relatively strong band warping effect in Bi2Te3 compared to Bi2Se3. OAM close to the Dirac point has an ideal chiral structure (sinθ) without an out-of-plane component. The warping effect comes in as the binding energy decreases, and circular dichroism along a constant energy contour can no longer be explained by a simple sinθ function but requires a sin3θ term. When the warping effect becomes even stronger near the Fermi energy, circular dichroism gains an additional sin6θ term. Such behavior is found to be compatible with the theoretically predicted OAM structure.
|
| NDC分類 |
物理学 [ 420 ]
|
| 言語 |
英語
|
| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
|
| 発行日 | 2011 |
| 権利情報 |
(c) 2011 American Physical Society
|
| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.84.245435
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.84.245435
|
