| 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 |
Optical conductivity of the Kondo insulator YbB12 : Gap formation and low-energy excitations |
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言語 |
en |
| 作成者 |
Okamura, Hidekazu
Kimura, Shinichi
Shinozaki, H.
Nanba, Takao
Iga, Fumitoshi
Shimizu, Naoki
Takabatake, Toshiro
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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) 1998 American Physical Society. |
| 内容記述 |
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内容記述 |
Optical reflectivity experiments have been conducted on single crystals of the Kondo insulator YbB12 in order to obtain its optical conductivity, σ(ω). Upon cooling below 70 K, a strong suppression of σ(ω) is seen in the far-infrared region, indicating the opening of an energy gap of ∼25 meV. This gap development is coincident with a rapid decrease in the magnetic susceptibility, which shows that the gap opening has significant influence on magnetic properties. A narrow, asymmetric peak is observed at ∼40 meV in σ(ω), which is attributed to optical transitions between the Yb 4f-derived states across the gap. In addition, a broad peak is observed at ∼0.25 eV. This peak is attributed to transitions between Yb 4f-derived states and the p-d band, and is reminiscent of similar peaks previously observed for rare-earth hexaborides. |
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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.58.R7496 |
| 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.58.R7496 |
| 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 |
0163-1829 |
| 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 |
R7496 |
| 書誌情報 |
Physical Review B - Condensed Matter and Materials Physics
Physical Review B - Condensed Matter and Materials Physics
巻 58,
号 12,
p. R7496-R7499,
発行日 1998-09-15
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| 旧ID |
18730 |
PhysRevB_58_R7496.pdf (80.2 KB)
