Competing interactions and magnetic frustration in Yb4LiGe4

  title={Competing interactions and magnetic frustration in Yb4LiGe4},
  author={Steven Disseler and J. Niclas Svensson and Szor Peter and Chad Byers and Christopher Baines and A. Amato and Sean R. Giblin and Pietro Carretta and Michael J. Graf},
  journal={Physical Review B},
We have studied polycrystalline Yb4LiGe4, a ternary variant of the R5T4 family of layered compounds characterized by a very strong coupling between the magnetic and crystallographic degrees of freedom. The system is mixed valent, with nonmagnetic Yb2+ and magnetic Yb3+ present, and is characterized by coexisting ferromagnetic (FM) and antiferromagnetic (AFM) correlations. We present measurements of resistivity, AC-susceptibility, specific heat, and muon spin relaxation (μSR), below 1 K. The low… 
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Yb4LiGe4 – A Yb mixed valent Zintl phase with strong electronic correlations
Abstract Single-phase samples of Yb 4 LiGe 4 and Yb 5 Ge 4 were synthesized using high frequency (HF) heat treatment. Yb 4 LiGe 4 crystallizes in orthorhombic space group Pnma with the Gd 5 Si 4 type