【摘 要】
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We report the electrical resistivity,magnetic susceptibility,and heat capacity studies on a new intermetallic compound YbPtAs,which crystallizes in a modified A
【机 构】
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Institute of Physics and Beijing National Laboratory for Condensed Matter Physics,Chinese Academy of
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We report the electrical resistivity,magnetic susceptibility,and heat capacity studies on a new intermetallic compound YbPtAs,which crystallizes in a modified AlB2 type structure.The Yb ions in YbPtAs are in a trivalent state and order antiferromagnetically around Néel temperatures TN1 =6.5 K and TN2 =2.2 K,respectively,deduced both from the magnetic susceptibility x(T) and heat capacity C(T) measurements.The magnetic contribution in resistivity,ρm(T),exhibits a broad maximum at around 100K and a logarithmic temperature dependence in the high-temperature region,indicative of the presence of the Kondo effect in YbPtAs.
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