Single crystal growth and physical property characterizations of mixed valent compound YbFe2Al10
Abstract
We report single crystal growth and physical properties characterization of YbFe2Al10 compounds. The measurements of resistivity, magnetic susceptibility, and specific heat show different behaviors from previous studies on polycrystal samples. A mixed 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 4f electrons and different bands of conduction electrons.
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