| アイテムタイプ |
学術雑誌論文 / Journal Article.(1) |
| 公開日 |
2025-11-19 |
| 書誌情報 |
en : Physical Review B
巻 111,
号 3,
発行日 2025-01-27
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| タイトル |
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|
タイトル |
Comprehensive study of the luminescence properties of elemental metals |
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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 |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
Suemoto, Tohru
小野, 頌太
Asahara, Akifumi
Okuno, Tsuyoshi
Suzuki, Takeshi
Okazaki, Kozo
Tani, Shuntaro
Kobayashi, Yohei
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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 |
The lifetime and intensity of ultrafast luminescence in the near-infrared region were investigated for 15 representative elemental metals: simple light metals (Be, Mg, Al), 3d- (Ti, Ni, Zn), 4d- (Zr, Mo, Pd, Sn), 5d- (W, Pt) transition metals and noble metals (Au, Ag, Cu). The luminescence intensity at 0.9 eV was distributed over a range as wide as 2.5 orders of magnitude. The sum of an instantaneous response and an exponential decay component well approximated the time-evolution of the luminescence intensity at 0.6 eV. The lifetimes obtained from this decomposition were distributed in a narrower range from 110 fs (Be) to 694 fs (Ag), corresponding to a factor 6.3. We proposed a model based on the dielectric function of the bulk metal to understand the luminescence intensity of the quasi-instantaneous component. It was found that the luminescence intensity was inversely proportional to the Drude damping constant, that is, the slower the damping, the stronger the luminescence. This shows that quasi-instantaneous luminescence is quenched by the non-radiative decay of the non-thermal electrons via electron-electron scattering. The electron-phonon coupling strengths were evaluated using Eliashberg functions derived from ab initio calculations and the decay rates corresponding to electron-phonon scattering were evaluated using the extended two-temperature model considering the equilibration process of excited electrons. We found a fairly good agreement between the experimental and the theoretical results for the absolute values of the exponential decay rates. |
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言語 |
en |
| 出版者 |
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出版者 |
American Physical Society |
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言語 |
en |
| DOI |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
10.1103/PhysRevB.111.035150 |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
2469-9969 |
| 権利 |
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|
権利情報 |
©2025 American Physical Society |
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言語 |
en |
| 著者版フラグ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
PhysRevB_111_035150.pdf (619 KB)
