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

doi:10.1016/j.physb.2006.01.305

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

Research output: Contribution to journal › Article

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 μ_B. Its residual resistivity steeply increases above p_c ≅ 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 Ce_xLa_1-xAgSb₂ to study the p-f mixing effect. Small humps were observed in the temperature dependence of the resistivity in Ce_xLa_1-xAgSb₂. We expected them the CDW transition. The CDW state coexisted with the ferromagnetic state around x = 0.2.

Original language	English
Pages (from-to)	827-828
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	378-380
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2006.01.305
Publication status	Published - 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

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

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.",

keywords = "CeAgSb, LaAgSb, Singularity of resistivity, p-f mixing",

author = "Y. Watanabe and Y. Inada and H. Hidaka and H. Kotegawa and Kobayashi, {T. C.} and Matsuda, {T. D.} and D. Aoki",

year = "2006",

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T1 - Anisotropic behavior in resistivity of RAgSb2 ( R=Ce, La )

AU - Watanabe, Y.

AU - Inada, Y.

AU - Hidaka, H.

AU - Kotegawa, H.

AU - Kobayashi, T. C.

AU - Matsuda, T. D.

AU - Aoki, D.

PY - 2006/5/1

Y1 - 2006/5/1

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.

KW - CeAgSb

KW - LaAgSb

KW - Singularity of resistivity

KW - p-f mixing

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Access to Document

10.1016/j.physb.2006.01.305