Iron-Based Heavy Quasiparticles in SrFe$_{4}$Sb$_{12}$: An Infrared Spectroscopic Study

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dc.creatorKimura, Shin-ichi
dc.creatorMizuno, Takafumi
dc.creatorIm, Hojun
dc.creatorHayashi, Katsuyuki
dc.creatorMatsuoka, Eiichi
dc.creatorTakabatake, Toshiro
dc.date2006-08-29
dc.date.accessioned2026-07-07T07:19:51Z
dc.date.available2026-07-07T07:19:51Z
dc.descriptionTemperature-dependent infrared reflectivity spectra of SrFe$_{4}$Sb$_{12}$ 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 SrFe$_{4}$Sb$_{12}$ at low temperatures. This result is the clear evidence of the iron-based heavy quasiparticles.
dc.description5 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0608637
dc.identifierhttp://arxiv.org/abs/cond-mat/0608637
dc.identifierPhys. Rev. B 73, 214416 (2006)
dc.identifierdoi:10.1103/PhysRevB.73.214416
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/114779
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleIron-Based Heavy Quasiparticles in SrFe$_{4}$Sb$_{12}$: An Infrared Spectroscopic Study
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