Rashba Effect on the Structure of the Bi One-Bilayer Film: Fully Relativistic First-Principles Calculation

スポンサーリンク

概要

• 論文の詳細を見る

• Using first-principles calculations, we study the spin--orbit interactions and spin textures of a Bi one-bilayer film, which attracts scientific interest because of the topological insulator and so on. The substrate effect is successfully mimicked by applying on electric field in the perpendicular direction of the film, which breaks the inversion symmetry. We study the highest occupied band around the \Gamma point. Although the vortex of the in-plane spin component is well explained on the basis of the conventional Rashba effect, we find a substantial out-of-plane component which cannot be explained by the conventional Rashba model. This spin texture is similar to that of a multi-bilayer Bi film, which has recently been observed using a spin-resolved angle-resolved photoemission spectroscopy experiment. We also find a spin vortex around the K point although this point has no time-reversal symmetry. We expect that a similar vortex appears in materials having the p3m1 symmetry, whose spin--orbit interactions have recently attracted scientific interest.

• 2013-03-25

著者

• Ishii Fumiyuki

  Faculty of Mathematics and Physics, Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan

• Saito Mineo

  Faculty of Mathematics and Physics, Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan

• Kotaka Hiroki

  Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa 920-1192, Japan

関連論文

• Magnetism in dehydrogenated armchair graphene nanoribbon
• Edge States of Bi Nanoribbons on Bi Substrates: First-Principles Density Functional Study
• Rashba Effect on the Structure of the Bi One-Bilayer Film: Fully Relativistic First-Principles Calculation
• Rashba Effect on the Structure of the Bi One-Bilayer Film : Fully Relativistic First-Principles Calculation

スポンサーリンク