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ID 18726
本文ファイル
著者
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
抄録(英)
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.
掲載誌名
Physical Review Letters
77巻
20号
開始ページ
4269
終了ページ
4272
出版年月日
1996-11-11
出版者
American Physical Society
ISSN
0031-9007
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 1996 American Physical Society.
関連情報URL
部局名
先端物質科学研究科