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

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

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

Fingerprint

Fermi surface
electrical resistivity
Fermi surfaces
Anisotropy
hollow
moments
temperature dependence
anisotropy
Temperature

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Watanabe, Y., Inada, Y., Hidaka, H., Kotegawa, H., Kobayashi, T., 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

Anisotropic behavior in resistivity of RAgSb2 ( R=Ce, La ). / Watanabe, Y.; Inada, Yoshihiko; Hidaka, H.; Kotegawa, H.; Kobayashi, Tatsuo; Matsuda, T. D.; Aoki, D.

In: Physica B: Condensed Matter, Vol. 378-380, No. SPEC. ISS., 01.05.2006, p. 827-828.

Research output: Contribution to journalArticle

Watanabe, Y, Inada, Y, Hidaka, H, Kotegawa, H, Kobayashi, T, Matsuda, TD & Aoki, D 2006, 'Anisotropic behavior in resistivity of RAgSb2 ( R=Ce, La )', Physica B: Condensed Matter, vol. 378-380, no. SPEC. ISS., pp. 827-828. https://doi.org/10.1016/j.physb.2006.01.305
Watanabe, Y. ; Inada, Yoshihiko ; Hidaka, H. ; Kotegawa, H. ; Kobayashi, Tatsuo ; Matsuda, T. D. ; Aoki, D. / Anisotropic behavior in resistivity of RAgSb2 ( R=Ce, La ). In: Physica B: Condensed Matter. 2006 ; Vol. 378-380, No. SPEC. ISS. pp. 827-828.
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AU - Inada, Yoshihiko

AU - Hidaka, H.

AU - Kotegawa, H.

AU - Kobayashi, Tatsuo

AU - Matsuda, T. D.

AU - Aoki, D.

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N2 - 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.

AB - 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.

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KW - Singularity of resistivity

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