2018年11月1日
Electronic states of CeT2X20 (T:transition metal, X=Zn and Cd)
AIP Advances
- 巻
- 8
- 号
- 11
- 開始ページ
- 115017
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1063/1.5043138
© 2018 Author(s). The electronic state of single crystals of CeIr2(Zn1-xCdx)20 and CePt2Cd20 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 T2-term in ρ, are enhanced. Our experimental results reveal that the electronic state of the intermediate valence compound CeIr2Zn20 changes to a moderately heavy fermion state due to the negative chemical pressure. On the other hand, C and ρ of CePt2Cd20 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.
- リンク情報
- ID情報
-
- DOI : 10.1063/1.5043138
- eISSN : 2158-3226
- SCOPUS ID : 85056906725