| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2023-07-06 |
| タイトル |
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タイトル |
Breakdown of bulk-projected isotropy in surface electronic states of topological Kondo insulator SmB6(001) |
|
言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Ohtsubo Yoshiyuki
Toru Nakaya
Takuto Nakamura
Francois Bertran
Patrick Le Fevre
Fumitoshi Iga
Shin-Ichi Kimura
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
The topology and spin-orbital polarization of two-dimensional (2D) surface electronic states have been extensively studied in this decade. One major interest in them is their close relationship with the parities of the bulk (3D) electronic states. In this context, the surface is often regarded as a simple truncation of the bulk crystal. Here we show breakdown of the bulk-related in-plane rotation symmetry in the topological surface states (TSSs) of the Kondo insulator SmB6. Angle-resolved photoelectron spectroscopy (ARPES) performed on the vicinal SmB6(001)-p(2?×?2) surface showed that TSSs are anisotropic and that the Fermi contour lacks the fourfold rotation symmetry maintained in the bulk. This result emphasizes the important role of the surface atomic structure even in TSSs. Moreover, it suggests that the engineering of surface atomic structure could provide a new pathway to tailor various properties among TSSs, such as anisotropic surface conductivity, nesting of surface Fermi contours, or the number and position of van Hove singularities in 2D reciprocal space. |
| 書誌情報 |
Nature Communications
巻 13,
p. 5600,
発行日 2022-09
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| 出版者 |
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出版者 |
Springer Nature |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2041-1723 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1038/s41467-022-33347-0 |
