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説明:

We investigate the topological electronic properties of the 𝐾4 crystal by constructing a tight-binding model. The bulk band structure hosts Weyl nodes with higher and conventional chiralities (𝜒=±2 and 𝜒=±1) located at high-symmetry points in the Brillouin zone. Through analytical evaluation of the Berry curvature, we identify the positions and chiralities of these Weyl nodes. Furthermore, slab calculations for the (001) surface reveal Fermi arcs that connect Weyl nodes of opposite chirality, including those linking 𝜒=±2 nodes with pairs of 𝜒=∓1 nodes. These results demonstrate that the 𝐾4 crystal is a spinless Weyl semimetal featuring topologically protected surface states originating from multiple types of Weyl nodes.

権利情報:

• In Copyright
  

  ©2026 American Physical Society

キーワード: K4 crystal, Gyroid lattice, Weyl point, Fermi arc, topological charge, Berry curvature, surface state

刊行年月日: 2026-02-05

出版者: American Physical Society (APS)

掲載誌:

• Physical Review B (ISSN: 24699950) vol. 113 issue. 8 085409

研究助成金:

• Japan Society for the Promotion of Science JP25K01609
• Japan Society for the Promotion of Science JP22H05473
• Japan Society for the Promotion of Science JP21H01019
• Japan Science and Technology Agency JPMJCR19T1
• Sumitomo Foundation 2401203

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6340

公開URL: https://doi.org/10.1103/jc96-wrmj

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更新時刻: 2026-06-17 08:00:09 +0900

MDRでの公開時刻: 2026-06-17 10:49:33 +0900