| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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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 |
1Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190
2School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049
3Collaborative Innovation Center of Quantum Matter, Beijing 100190
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| Cite this article: |
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Hui Liang, Shuai Zhang, Yu-Jia Long et al 2018 Chin. Phys. Lett. 35 077503 |
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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.
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Received: 02 May 2018
Published: 24 June 2018
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| PACS: |
75.30.Mb
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(Valence fluctuation, Kondo lattice, and heavy-fermion phenomena)
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71.27.+a
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(Strongly correlated electron systems; heavy fermions)
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75.30.Cr
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(Saturation moments and magnetic susceptibilities)
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75.20.Hr
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(Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions)
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| Fund: Supported by the National Basic Research Program of China under Grant No 2015CB921303, the National Key Research Program of China under Grant No 2016YFA0300604, the Strategic Priority Research Program (B) of Chinese Academy of Sciences under Grant No XDB07020100, and the National Natural Science Foundation of China under Grant No 11404175. |
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