Iron-based heavy quasiparticles in SrFe4Sb12 : An infrared spectroscopic study
Physical Review B - Condensed Matter and Materials Physics 73 巻 21 号
214416-1-214416-5 頁
2006-06-09 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Iron-based heavy quasiparticles in SrFe4Sb12 : An infrared spectroscopic study
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| 作成者 |
Kimura Shin-ichi
Mizuno Takafumi
Im Hojun
Hayashi Katsuyuki
Matsuoka Eiichi
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| 収録物名 |
Physical Review B - Condensed Matter and Materials Physics
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| 巻 | 73 |
| 号 | 21 |
| 開始ページ | 214416-1 |
| 終了ページ | 214416-5 |
| 抄録 |
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.
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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 | 2006-06-09 |
| 権利情報 |
Copyright (c) 2006 The 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] 1098-0121
[DOI] 10.1103/PhysRevB.73.214416
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.54.1194
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