| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-04-21 |
| タイトル |
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タイトル |
Amorphous ferromagnetic metal in van der Waals materials |
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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 |
Siyue Zhang
Harii Kazuya
Yokouchi Tomiyuki
Okayasu Satoru
Yuki Shiomi
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Amorphous solids are non-equilibrium states of matter that lack long-range structural order, and are recognized as key materials in electronics. Although two-dimensional van der Waals materials have been intensively studied in the wide field of materials science, their amorphous states have been less studied experimentally. Here, we find that a van der Waals ferromagnetic semiconductor CrGeTe3 transforms into an amorphous ferromagnetic metal upon irradiation with high-energy Xe ions. Notably, the Curie temperature of the amorphous state reaches 200 K, which is three times higher than that of the crystalline phase. The anomalous Hall conductivity in the amorphous phase is governed by the extrinsic skew-scattering mechanism, although conventional theory predicts that skew scattering is dominant only in ultra-clean ferromagnetic metals. Our present results call for a new theory of the anomalous Hall effect in highly disordered ferromagnetic conductors. Moreover, the unique change in magnetic and transport properties due to amorphization of the van der Waals material will open up a new research field in materials science. |
| 書誌情報 |
Advanced Electronic Materials
巻 10,
号 2,
p. 2300609,
発行日 2023-11
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| 出版者 |
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出版者 |
Wiley |
| 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 |
2199-160X |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1002/aelm.202300609 |
