Anisotropic behavior in resistivity of RAgSb2 ( R=Ce, La )

Y. Watanabe, Y. Inada, H. Hidaka, H. Kotegawa, T. C. Kobayashi, T. D. Matsuda, D. Aoki

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Abstract

CeAgSb2 crystallizes in the tetragonal ZrCuSi2 type structure (P4/nmm), which consists of Sb-Ce, Sb-Ag-Ce, Sb-Sb layers. It shows the peculiar anisotropic ferromagnetic ordering below 9.7 K with a small ordered moment of 0.33 μB. Its residual resistivity steeply increases above pc ≅ 3.3 GPa where the magnetic order disappears. It is expected that the p-f mixing on the peculiar hollow square pillar-like Fermi surface plays an important role in CeAgSb2, while similar Fermi surfaces were not observed in LaAgSb2. We have measured the anisotropy in the electrical resistivity of CexLa1-xAgSb2 to study the p-f mixing effect. Small humps were observed in the temperature dependence of the resistivity in CexLa1-xAgSb2. We expected them the CDW transition. The CDW state coexisted with the ferromagnetic state around x = 0.2.

Original languageEnglish
Pages (from-to)827-828
Number of pages2
JournalPhysica B: Condensed Matter
Volume378-380
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - May 1 2006

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Keywords

  • CeAgSb
  • LaAgSb
  • Singularity of resistivity
  • p-f mixing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Watanabe, Y., Inada, Y., Hidaka, H., Kotegawa, H., Kobayashi, T. C., Matsuda, T. D., & Aoki, D. (2006). Anisotropic behavior in resistivity of RAgSb2 ( R=Ce, La ). Physica B: Condensed Matter, 378-380(SPEC. ISS.), 827-828. https://doi.org/10.1016/j.physb.2006.01.305