WEKO3
アイテム
Illuminating the Bragg intersections as roots of Dirac nodal lines and high-order van Hove singularities
https://repo.qst.go.jp/records/2000583
https://repo.qst.go.jp/records/200058395afa4a6-3614-4da6-bc95-e74e82caa0f9
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-08-09 | |||||||
| タイトル | ||||||||
| タイトル | Illuminating the Bragg intersections as roots of Dirac nodal lines and high-order van Hove singularities | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | journal article | |||||||
| 著者 |
Akashi Ryosuke
× Akashi Ryosuke
|
|||||||
| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | We theoretically study nearly uniform electron models with weak crystalline potentials. In particular, we theorize the modulation of the plane-wave branches at linear regions where multiple Bragg planes intersect. Any such linear intersections involve three or more plane-wave branches diffracted by the periodic potential. Small inter-branch interactions can yield various crossing and anticrossing singularities with promised breakdown of the quadratic approximation, extending alongside the intersection lines. Most of the intersections run in low-symmetric paths in the Brillouin zone and therefore we cannot completely characterize their electronic states with standard band structure plotting methods. The present theory reveals a general mechanism in nearly uniform systems to induce approximately degenerate and linearly continuous Dirac and van-Hove singularities in three dimensions, which may host a variety of anomalous low-energy electronic properties. We apply the theory to a recently discovered high temperature superconductor H3S to interpret the enigmatic density-of-state peaking therein. | |||||||
| 書誌情報 |
Physical Review Research 巻 6, 号 3, p. 033012, 発行日 2024-07 |
|||||||
| 出版者 | ||||||||
| 出版者 | American Physical Society | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 2643-1564 | |||||||
| DOI | ||||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | 10.1103/PhysRevResearch.6.033012 | |||||||
