Magnetic and Transport Properties of the Kondo Lattice Compound YbPtAs
Hui Liang1,2 , Shuai Zhang1 , Yu-Jia Long1 , Jun-Bao He1 , Jing Li1,2 , Xin-Min Wang1,2 , Zhi-An Ren1,2,3 , Gen-Fu Chen1,2,3
1 Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 1001902 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 1000493 Collaborative Innovation Center of Quantum Matter, Beijing 100190
Abstract ：We report the electrical resistivity, magnetic susceptibility, and heat capacity studies on a new intermetallic compound YbPtAs, which crystallizes in a modified AlB$_2$ type structure. The Yb ions in YbPtAs are in a trivalent state and order antiferromagnetically around Néel temperatures $T_{\rm N1}=6.5$ K and $T_{\rm N2}=2.2$ K, respectively, deduced both from the magnetic susceptibility $\chi(T)$ and heat capacity $C(T)$ measurements. The magnetic contribution in resistivity, $\rho_{\rm m}(T)$, exhibits a broad maximum at around 100 K and a logarithmic temperature dependence in the high-temperature region, indicative of the presence of the Kondo effect in YbPtAs.
收稿日期: 2018-05-02
出版日期: 2018-06-24
:
75.30.Mb
(Valence fluctuation, Kondo lattice, and heavy-fermion phenomena)
71.27.+a
(Strongly correlated electron systems; heavy fermions)
75.30.Cr
(Saturation moments and magnetic susceptibilities)
75.20.Hr
(Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions)
引用本文:
. [J]. 中国物理快报, 2018, 35(7): 77503-.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/35/7/077503
或
https://cpl.iphy.ac.cn/CN/Y2018/V35/I7/77503
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2018, Vol. 35 
