検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Fabrication of (Bi$$_2$$)$$_m$$(Bi$$_2$$Te$$_3$$)$$_n$$ superlattice films by Te desorption from a pristine Bi$$_2$$Te$$_3$$ film

Bi$$_2$$Te$$_3$$薄膜からのTe脱離を用いた[Bi$$_2$$]$$_m$$[Bi$$_2$$Te$$_3$$]$$_n$$超格子薄膜の作成

日下 翔太郎*; 佐々木 泰祐*; 角田 一樹   ; 一ノ倉 聖*; 出田 真一郎*; 田中 清尚*; 宝野 和博*; 平原 徹*

Kusaka, Shotaro*; Sasaki, Taisuke*; Sumida, Kazuki; Ichinokura, Satoru*; Ideta, Shinichiro*; Tanaka, Kiyohisa*; Hono, Kazuhiro*; Hirahara, Toru*

We fabricated superlattice films composed of Bi$$_2$$ bilayers (BLs) and Bi$$_2$$Te$$_3$$ quintuple layers (QLs) by annealing pure Bi$$_2$$Te$$_3$$ films. It was found that Te desorbs from the QL to form the BL with an activation energy of 2.7 eV. Eventually two distinct stoichiometric phases were formed, Bi$$_1$$Te$$_1$$ (QL-BL-QL) and Bi$$_4$$Te$$_3$$ (QL-BL), as evidenced by scanning transmission emission microscopy measurements. The surface-state dispersion was measured with angle-resolved photoemission spectroscopy and the topological nature of each sample is discussed. Our method offers a convenient and simple way to fabricate superlattice films with different topological properties.

Access

:

- Accesses

InCites™

:

パーセンタイル:37.1

分野:Physics, Applied

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.