Optical study of c–f hybridization states in mixed-valent Yb compounds: metallic YbAl3 vs semiconducting YbB12

Okamura, Hidekazu; Michizawa, Takahiro; Matsunami, Masaharu; Kimura, S.; Nanba, Tetsuya; Ebihara, Takao; Iga, Fumitoshi; Takabatake, Toshiro

doi:10.1016/j.jmmm.2003.11.151

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…The optical measurement was reported by Okamura et al 47,93 . Besides the generic features commonly seen for other heavy fermions and mixed valent compounds, like the narrow Drude component and the mid-infrared peak, the optical conductivity shows peculiar structure below the mid-infrared peak, which stimulated some further discussions.…”

Section: Infrared Properties Of Mixed-valent Systemsmentioning

confidence: 99%

Infrared properties of heavy fermions: evolution from weak to strong hybridizations

Chen¹,

Wang²

2016

Rep. Prog. Phys.

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In this article, we review the charge excitations of heavy fermion compounds probed by infrared spectroscopy. The article is not meant to be a comprehensive survey of experimental investigations. Rather it focuses on the dependence of charge excitations on the hybridization strength. In this context, the infrared properties of the Ce m M n In 3m+2n family are discussed in detail since the hybridization strengths differ dramatically in different members despite their similar lattice structures. Investigations on some mixed valent compounds are also presented aiming to elucidate the generic trend on the evolution. In particular, we address the scaling between hybridization energy gap ∆ dir and the hybridization strengthṼ(∝ √ WT K ) in a wide range of heavy fermions compounds which demonstrates that the periodic Anderson model can generally and quantitatively describe the low-energy charge excitations.

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Section: Infrared Properties Of Mixed-valent Systemsmentioning

confidence: 99%

Infrared properties of heavy fermions: evolution from weak to strong hybridizations

Chen¹,

Wang²

2016

Rep. Prog. Phys.

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“…They are most likely to be caused by the c-f hybridizations as elaborated above. [32,33], where the multiple peaks structure was speculated to arise from the indirect and direct interband transitions across the hybridization gap, respectively. Since the indirect transition could occur only through the assistance of impurities and bosonic excitations (e.g.…”

Section: Now Let Us Turn To the Analysis Of The Lorentz Componentsmentioning

confidence: 99%

Single-crystal growth and physical property characterization of the intermediate-valence compound YbFe2Al10

Chen

Wang

et al. 2017

Phys. Rev. B

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We report single crystal growth and physical properties characterization of YbFe 2 Al 10 compounds. The measurements of resistivity, magnetic susceptibility, and specific heat show different behaviors from previous studies on polycrystal samples. An intermediate valent characteristic with moderate mass enhancement is indicated. In particular, the optical spectroscopy measurement reveals formation of multiple hybridization energy gaps which become progressively pronounced at low temperature. The multiple hybridization energy gaps are likely caused by the hybridizations between the flat band from Yb 4 f electrons and different bands of conduction electrons.

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Hot electron relaxation in the heavy-fermionYb1−xLuxAl3compound using femtosecond optical pump-probe spe

et al. 2009

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Optical study of c–f hybridization states in mixed-valent Yb compounds: metallic YbAl3 vs semiconducting YbB12

Cited by 4 publications

References 5 publications

Infrared properties of heavy fermions: evolution from weak to strong hybridizations

Infrared properties of heavy fermions: evolution from weak to strong hybridizations

Single-crystal growth and physical property characterization of the intermediate-valence compound YbFe2Al10

Hot electron relaxation in the heavy-fermionYb1−xLuxAl3compound using femtosecond optical pump-probe spe

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