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Large intrinsic spin Hall conductivity in orthorhombic tungsten
https://repo.qst.go.jp/records/2000407
https://repo.qst.go.jp/records/20004075c7f2c92-78ed-42db-bb55-91e617bcdf8e
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||
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| 公開日 | 2024-02-16 | |||||||
| タイトル | ||||||||
| タイトル | Large intrinsic spin Hall conductivity in orthorhombic tungsten | |||||||
| 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
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | In this paper, we explored metastable phases showing large intrinsic spin Hall conductivity (SHC) in bulk tungsten (W) using a crystal structure search scheme based on an evolutionary algorithm (EA) and first-principles calculations. W has been known to have the most stable phase with the body-centered cubic (bcc) structure (α-W) and the metastable phase with a cubic Pm￣3n structure (β-W) and show the enhancement of SHC in β-W. As the results of the EA search, we obtained 15 metastable structures in addition to α-W and β-W and found that orthorhombic Fddd and Cmcm structures show larger SHC at the Fermi level. The Fddd structure is formed by adding a fourfold helical distortion along the [110] direction to bcc and the Cmcm structure is obtained by further distortion of Fddd. Although the energies are higher by about 300,meV/atom than that of bcc, the SHC values at the Fermi level show 1710,(?/e)(Ωcm)?1 for Fddd and 1573,(?/e)(Ωcm)?1 for Cmcm, which are almost twice as large as that of α-W and exceed 1455,(?/e)(Ωcm)?1 calculated for β-W. |
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| 書誌情報 |
Physical Review Materials 巻 7, 号 2, p. 026202 ?, 発行日 2023-02 |
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| 出版者 | ||||||||
| 出版者 | American Physical Society | |||||||
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| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 2475-9953 | |||||||
| DOI | ||||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | 10.1103/PhysRevMaterials.7.026202 | |||||||
