| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
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タイトル |
Sharp luminescent lines from single three-dimensionally confined GaAs/AlAs structures grown on a patterned GaAs substrate |
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言語 |
en |
| 作成者 |
Kasai, Jun-ichi
Tanaka, Sigehisa
Higuchi, Katsuhiko
Katayama, Yoshifumi
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| 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 |
| 権利情報 |
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権利情報 |
Copyright (c) 1999 American Physical Society. |
| 内容記述 |
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内容記述 |
We report extremely sharp lines of photoluminescence (PL) and photoluminescence excitation (PLE) spectra from single three-dimensionally confined GaAs/AlAs structures grown on square mesas patterned onto a GaAs substrate. The single structures, which had a 10-nm vertical thickness and a 0.2-μm lateral width, were measured at 8 K by microphotoluminescence. At high-excitation power, the PL and PLE spectra of the single structures exhibited broad exciton peaks several meV wide. However, when the excitation power was lowered, each heavy-hole exciton peak in the PL and PLE spectra became a series of sharp lines whose widths were respectively, about 0.5 and 0.3 meV. The sharp lines of the PL spectra were probably due to the radiative recombination of excitons localized into lateral potential islands in the single structure. In the PL spectrum at a lower excitation power, a sharp line split into extremely sharp lines (≅ 0.04 meV). This fine splitting possibly represents a difference in the confinement energy of excitons localized in potential islands that have almost the same local thickness but differ in size and microstructure. From our analysis of the PLE spectra and the resonant PL spectra, we conclude that a sharp line in a PLE spectrum is not directly related to any particular sharp line of a PL spectrum. The sharp lines of the PLE spectra can be interpreted in terms of exciton absorption whose energy is determined by the locally averaged thickness of the single structure. |
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言語 |
en |
| 出版者 |
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出版者 |
American Physical Society |
| 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 |
| 出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
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識別子タイプ |
DOI |
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関連識別子 |
10.1103/PhysRevB.60.13727 |
| 関連情報 |
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識別子タイプ |
DOI |
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関連識別子 |
http://dx.doi.org/10.1103/PhysRevB.60.13727 |
| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1098-0121 |
| 収録物識別子 |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA11187113 |
| 開始ページ |
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開始ページ |
13 727 |
| 書誌情報 |
Physical Review B - Condensed Matter and Materials Physics
Physical Review B - Condensed Matter and Materials Physics
巻 60,
号 19,
p. 13 727-13 734,
発行日 1999-11-15
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| 旧ID |
18805 |
PhysRevB_60_13727.pdf (152.7 KB)
