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Antiferromagnetic ordering in the Kondo lattice system Yb$_2$Fe$_3$Si$_5$

Yogesh Singh·S. Ramakrishnan·Z. Hossain·C. Geibel
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Abstract

Compounds belonging to the R$_2$Fe$_3$Si$_5$ series exhibit unusual superconducting and magnetic properties. Although a number of studies have been made on the first reentrant antiferromagnet superconductor Tm$_2$Fe$_3$Si$_5$, the physical properties of Yb$_2$Fe$_3$Si$_5$ are largely unexplored. In this work, we attempt to provide a comprehensive study of bulk properties such as, resistivity, susceptibility and heat-capacity of a well characterized polycrystalline Yb$_2$Fe$_3$Si$_5$. Our measurements indicate that Yb$^{3+}$ moments order antiferromagnetically below 1.7 K. Moreover, the system behaves as a Kondo lattice with large Sommerfeld coefficient ($γ$) of 0.5~J/Yb mol K$^{2}$ at 0.3 K, which is well below T$_N$. The absence of superconductivity in Yb$_2$Fe$_3$Si$_5$ down to 0.3 K at ambient pressure is attributed to the presence of the Kondo effect.

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Yogesh Singh, S. Ramakrishnan, Z. Hossain, C. Geibel. 2003-04-04. Antiferromagnetic ordering in the Kondo lattice system Yb$_2$Fe$_3$Si$_5$. https://doi.org/10.1103/physrevb.66.014415

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