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Electronic states of CeTX (T:transition metal, X=Zn and Cd)

AIP Advances, ISSN: 2158-3226, Vol: 8, Issue: 11
2018
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Article Description

The electronic state of single crystals of CeIr(ZnCd) and CePtCd has been studied by measuring the electrical resistivity ρ and specific heat C. We found that by substituting Zn with Cd, the lattice parameter expands, and the electronic specific heat coefficient γ and A coefficient, which is T-term in ρ, are enhanced. Our experimental results reveal that the electronic state of the intermediate valence compound CeIrZn changes to a moderately heavy fermion state due to the negative chemical pressure. On the other hand, C and ρ of CePtCd show a clear jump and an abrupt change of slope below 0.3 K, respectively, due to a magnetic transition. The relation between the hybridization strength and Ce valence state has also been investigated by X-ray absorption experiment.

Bibliographic Details

Hirose, Yusuke; Suzuki, Yoshitaka; Honda, Fuminori; Kulkarni, Ruta; Thamizhavel, Arumugam; Kawamura, Naomi; Mizumaki, Masaichiro; Simokasa, Ryohei; Mimura, Kojiro; Doto, Hiroshi; Settai, Rikio

AIP Publishing

Physics and Astronomy

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