e-Journal of Surface Science and Nanotechnology
Online ISSN : 1348-0391
ISSN-L : 1348-0391
Conference -ISSS-8-
Electric Field Dependence of Topological Edge States in One-Bilayer Bi(111): A First-Principles Study
Hikaru SawahataNaoya YamaguchiHiroki KotakaFumiyuki Ishii
Author information
JOURNALS FREE ACCESS

2018 Volume 16 Pages 427-430

Details
Abstract

We investigate the effect of the electric field on the edge states in one-bilayer Bi(111) by first-principles calculations. We calculate the band structures of armchair and zigzag Bi nanoribbons. With increasing strength of the electric field E > 2.1 V/Å, the armchair nanoribbon shows a topological phase transition from non-trivial metallic edge states to insulating edge states. However, under the same conditions, the zigzag nanoribbon shows a topological phase transition from non-trivial metallic edge states to trivial metallic edge states. We expect that these findings will contribute to the development of, e.g., spin current switches for use in next-generation devices. [DOI: 10.1380/ejssnt.2018.427]

Fullsize Image
Information related to the author

この記事はクリエイティブ・コモンズ [表示 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by/4.0/deed.ja
Previous article Next article
feedback
Top