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Unsolved problem of long-range interactions: Dipolar spin-ice study
https://repo.qst.go.jp/records/2000991
https://repo.qst.go.jp/records/20009919804a0f7-a6ab-49dd-8671-95bda9268ebf
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||
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| 公開日 | 2024-02-28 | |||||||
| タイトル | ||||||||
| タイトル | Unsolved problem of long-range interactions: Dipolar spin-ice study | |||||||
| 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 |
Yonetani Yoshiteru
× Yonetani Yoshiteru
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Long-range interactions derive various strange phenomena. As illustrated by cutoff simulations of water, increasing cutoff length does not improve the simulation result necessarily; on the contrary, it makes the result worse. In the extreme situation, the structure of water transforms into a layer structure. In this study, to explore the underlying mechanism of this phenomenon, we performed Monte Carlo simulations on dipolar spins arranged on a pyrochlore spin-ice lattice. Like the water case, the present dipolar spin system also showed cutoff-induced dipole ordering and layer formation. The width of the layers depended on the cutoff length; and longer cutoff length led to a broader layer. These features are certainly consistent with the previous water case. This indicates that layer formation is the general behavior of dipolar systems whose interactions are truncated within a finite distance. The result is important for future exploration of the relationship between long-range interactions and resulting structures. In addition, it emphasizes the necessity of rigorous treatment of long-range interactions because increasing the cutoff length prevents convergence and provides an entirely different result from the rigorous Ewald calculation. | |||||||
| 書誌情報 |
Journal of Physics: Condensed Matter 巻 36, p. 175401, 発行日 2024-01 |
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| 出版者 | ||||||||
| 出版者 | Institute of Physics (IOP) | |||||||
| DOI | ||||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | 10.1088/1361-648X/ad1ca6 | |||||||
