Antiferromagnetic ordering in the Kondo lattice systemYb2Fe3Si5

2002/07/01 by Yogesh Singh, S. Ramakrishnan, Z. Hossain +1 · 2 citations
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Magnetic Properties of Alloys #Rare-earth and actinide compounds #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.66.014415

published as Phys.Rev.B 66, 014415 (2002) · 10 pages, 3 figures, tex document. A fuller version has appeared in PRB. Here we have omitted the figures showing the crystal structure and the fitting of the X-ray pattern. Also the table with the lattice parameters obtained from fitting has been removed

openalex publication_date 2002/07/01 · arxiv created 2003/04/04 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Compounds belonging to the R₂Fe₃Si₅ series exhibit unusual superconducting and magnetic properties. Although a number of studies have been made on the first reentrant antiferromagnet superconductor Tm₂Fe₃Si₅, the physical properties of Yb₂Fe₃Si₅ 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 Yb₂Fe₃Si₅. Our measurements indicate that Yb³⁺ moments order antiferromagnetically below 1.7 K. Moreover, the system behaves as a Kondo lattice with large Sommerfeld coefficient (\ensuremathγ) of 0.5 J/YbmolK² at 0.3 K, which is well below T_N. The absence of superconductivity in Yb₂Fe₃Si₅ down to 0.3 K at ambient pressure is attributed to the presence of the Kondo effect.

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• Electronic structure and Fermi surface of iron-based superconductors R2Fe3Si5 (R = Lu;Y;Sc) from first principles
• The electronic structure of rare-earth iron silicide R2Fe3Si5 superconductors