Iron-based heavy quasiparticles in SrFe4Sb12 : An infrared spectroscopic study
Physical Review B - Condensed Matter and Materials Physics Volume 73 Issue 21
Page 214416-1-214416-5
published_at 2006-06-09
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| File | |
| Title ( eng ) |
Iron-based heavy quasiparticles in SrFe4Sb12 : An infrared spectroscopic study
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| Creator |
Kimura Shin-ichi
Mizuno Takafumi
Im Hojun
Hayashi Katsuyuki
Matsuoka Eiichi
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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 73 |
| Issue | 21 |
| Start Page | 214416-1 |
| End Page | 214416-5 |
| Abstract |
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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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2006-06-09 |
| Rights |
Copyright (c) 2006 The American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[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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