Details

Autor(en) / Beteiligte

• Yang, Fang
• Miao, Lin
• Wang, Z F
• Yao, Meng-Yu
• Zhu, Fengfeng
• Song, Y R
• Wang, Mei-Xiao
• Xu, Jin-Peng
• Fedorov, Alexei V
• Sun, Z
• Zhang, G B
• Liu, Canhua
• Liu, Feng
• Qian, Dong
• Gao, C L
• Jia, Jin-Feng

Titel

Spatial and energy distribution of topological edge states in single Bi(111) bilayer

Ist Teil von

• Physical review letters, 2012-07, Vol.109 (1), p.016801-016801, Article 016801

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2012

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• By combining scanning tunneling microscopy and spectroscopy, angle-resolved photoemission spectroscopy, and density functional theory band calculations, we directly observe and resolve the one-dimensional edge states of single bilayer (BL) Bi(111) islands on clean Bi(2)Te(3) and Bi(111)-covered Bi(2)Te(3) substrates. The edge states are localized in the vicinity of step edges having an ∼2  nm wide spatial distribution in real space and reside in the energy gap of the Bi(111) BL. Our results demonstrate the existence of nontrivial topological edge states of single Bi(111) bilayer as a two-dimensional topological insulator.