このエントリーをはてなブックマークに追加
ID 19296
本文ファイル
著者
Kimura, Shin-ichi
Mizuno, Takafumi
Im, Hojun
Hayashi, Katsuyuki
Matsuoka, Eiichi
抄録(英)
Temperature-dependent infrared reflectivity spectra of Sr Fe4 Sb12 has been measured. A renormalized Drude peak with a heavy effective mass and a pronounced pseudogap of 10 meV develops in the optical conductivity spectra at low temperatures. As the temperature decreases below 100 K, the effective mass (m*) rapidly increases, and the scattering rate (1 τ) is quenched. The temperature dependence of m* and 1 τ indicates that the hybridization between the Fe 3d spins and the charge carriers plays an important role in determining the physical properties of Sr Fe4 Sb12 at low temperatures. This result is the clear evidence of the iron-based heavy quasiparticles.
掲載誌名
Physical Review B - Condensed Matter and Materials Physics
73巻
21号
開始ページ
214416-1
終了ページ
214416-5
出版年月日
2006-06-09
出版者
American Physical Society
ISSN
1098-0121
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) 2006 The American Physical Society.
関連情報URL
部局名
先端物質科学研究科