Coexistence of Two Types of Spin Splitting Originating from Different Symmetries

Koichiro Yaji, Anton Visikovskiy, Takushi Iimori, Kenta Kuroda, Singo Hayashi, Takashi Kajiwara, Tanaka Satoru, Fumio Komori, Shik Shin

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

The symmetry of a surface or interface plays an important role in determining the spin splitting and texture of a two-dimensional band. Spin-polarized bands of a triangular lattice atomic layer (TLAL) consisting of Sn on a SiC(0001) substrate is investigated by spin- and angle-resolved photoelectron spectroscopy. Surprisingly, both Zeeman- and Rashba-type spin-split bands, without and with spin degeneracy, respectively, coexist at a K point of the Sn TLAL. The K point has a threefold symmetry without inversion symmetry according to the crystal structure including the SiC periodicity, meaning that the Zeeman-type is consistent with the symmetry of the lattice while the Rashba-type is inconsistent. Our density functional calculations reveal that the charge density distribution of the Rashba-type (Zeeman-type) band shows (no) inversion symmetry at the K point. Therefore, the symmetry of the charge density distribution agrees with both types of the spin splitting.

元の言語英語
記事番号126403
ジャーナルPhysical Review Letters
122
発行部数12
DOI
出版物ステータス出版済み - 3 29 2019

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symmetry
density distribution
inversions
periodic variations
textures
photoelectron spectroscopy
crystal structure

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

Coexistence of Two Types of Spin Splitting Originating from Different Symmetries. / Yaji, Koichiro; Visikovskiy, Anton; Iimori, Takushi; Kuroda, Kenta; Hayashi, Singo; Kajiwara, Takashi; Satoru, Tanaka; Komori, Fumio; Shin, Shik.

:: Physical Review Letters, 巻 122, 番号 12, 126403, 29.03.2019.

研究成果: ジャーナルへの寄稿記事

Yaji, Koichiro ; Visikovskiy, Anton ; Iimori, Takushi ; Kuroda, Kenta ; Hayashi, Singo ; Kajiwara, Takashi ; Satoru, Tanaka ; Komori, Fumio ; Shin, Shik. / Coexistence of Two Types of Spin Splitting Originating from Different Symmetries. :: Physical Review Letters. 2019 ; 巻 122, 番号 12.
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