Low temperature transport and thermodynamic properties of the Zintl compound Yb sub(11)AlSb sub(9): A new Kondo lattice semiconductor

A thorough transport and thermodynamic investigation of flux-grown single crystals of the ternary Zintl phase Yb sub(11) AlSb sub(9), combined with first-principles density functional theory calculations, shows that this compound is a metal above T approximately 100 K and a semiconductor with small...

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Bibliographic Details
Published in:Journal of alloys and compounds 2016-06, Vol.669, p.60-65
Main Authors: Magnavitaa, E T, Rettoria, C, Osorio-Guillenc, J M, Ferreiraa, F F, Mendonca-Ferreiraa, L, Avilaa, MA, Ribeiroa, R A
Format: Article
Language:English
Subjects:
Alloys
Correlation
Density functional theory
Lattices
Mathematical analysis
Semiconductors
Thermodynamic properties
Transport
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Summary:A thorough transport and thermodynamic investigation of flux-grown single crystals of the ternary Zintl phase Yb sub(11) AlSb sub(9), combined with first-principles density functional theory calculations, shows that this compound is a metal above T approximately 100 K and a semiconductor with small hybridization gap at low-T. The general behavior resembles those of Kondo lattice semiconductors, although some of the measured properties are strongly sample dependent, as often seen in hybridized f-electron materials. We thus suggest that Yb sub(11) AlSb sub(9) can be considered as a new Yb-based Kondo lattice semiconductor joining the family of strongly correlated electron systems.
ISSN:0925-8388
DOI:10.1016/j.jallcom.2016.01.206