Low-Energy Electronic Structure of the Kondo Insulator YbB12
Physical Review Letters 77 巻 20 号
4269-4272 頁
1996-11-11 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Low-Energy Electronic Structure of the Kondo Insulator YbB12
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| 作成者 |
Susaki Tomofumi
Sekiyama Akira
Kobayashi Kensuke
Mizokawa Takashi
Fujimori Atsushi
Tsunekawa Masanori
Muro Takayuki
Matsushita Tomohiro
Suga Shigemasa
Ishii Hiroyoshi
Hanyu Takaaki
Miyahara Tsuneaki
Iga Fumitoshi
Kasaya Mitsuo
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| 収録物名 |
Physical Review Letters
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| 巻 | 77 |
| 号 | 20 |
| 開始ページ | 4269 |
| 終了ページ | 4272 |
| 抄録 |
We have studied the low-energy electronic structure of a Kondo insulator YbB12 by high-resolution photoemission spectroscopy. A "Kondo peak" is observed ~25 meV below the Fermi level, which agrees well with the Kondo temperature, whereas the gap at the Fermi level is found much smaller, indicating that the magnetic properties at higher temperatures (>75 K) are indeed determined by the Kondo effect in spite of the gap formation at lower temperatures. A renormalized band picture is presented to describe the coexistence of the Kondo peak and the transport gap as well as the highly asymmetric line shape of the Kondo peak.
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 1996-11-11 |
| 権利情報 |
Copyright (c) 1996 American Physical Society.
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.77.4269
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.77.4269
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