Metallic spin-liquid behavior of the geometrically frustrated kondo lattice Pr2Ir2O7

S. Nakatsuji; Y. MacHida; Y. Maeno; T. Tayama; T. Sakakibara; J. Van Duijn; L. Balicas; J. N. Millican; R. T. MacAluso; Julia Y. Chan

doi:10.1103/PhysRevLett.96.087204

Metallic spin-liquid behavior of the geometrically frustrated kondo lattice Pr2Ir2O7

S. Nakatsuji^*, Y. MacHida, Y. Maeno, T. Tayama, T. Sakakibara, J. Van Duijn, L. Balicas, J. N. Millican, R. T. MacAluso, Julia Y. Chan

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

332 Scopus citations

Abstract

Strongly frustrated magnetism of the metallic pyrochlore oxide Pr2Ir2O7 has been revealed by single crystal study. While Pr 4f moments have an antiferromagnetic RKKY interaction energy scale of |T*|=20K mediated by Ir 5d-conduction electrons, no magnetic long-range order is found except for partial spin freezing at 120mK. Instead, the Kondo effect, including a lnT dependence in the resistivity, emerges and leads to a partial screening of the moments below |T*|. Our results indicate that the underscreened moments show spin-liquid behavior below a renormalized correlation scale of 1.7K.

Original language	English
Article number	087204
Journal	Physical Review Letters
Volume	96
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.96.087204
State	Published - 2006

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Metallic spin-liquid behavior of the geometrically frustrated kondo lattice Pr2Ir2O7",

abstract = "Strongly frustrated magnetism of the metallic pyrochlore oxide Pr2Ir2O7 has been revealed by single crystal study. While Pr 4f moments have an antiferromagnetic RKKY interaction energy scale of |T*|=20K mediated by Ir 5d-conduction electrons, no magnetic long-range order is found except for partial spin freezing at 120mK. Instead, the Kondo effect, including a lnT dependence in the resistivity, emerges and leads to a partial screening of the moments below |T*|. Our results indicate that the underscreened moments show spin-liquid behavior below a renormalized correlation scale of 1.7K.",

author = "S. Nakatsuji and Y. MacHida and Y. Maeno and T. Tayama and T. Sakakibara and {Van Duijn}, J. and L. Balicas and Millican, {J. N.} and MacAluso, {R. T.} and Chan, {Julia Y.}",

year = "2006",

doi = "10.1103/PhysRevLett.96.087204",

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T1 - Metallic spin-liquid behavior of the geometrically frustrated kondo lattice Pr2Ir2O7

AU - Nakatsuji, S.

AU - MacHida, Y.

AU - Maeno, Y.

AU - Tayama, T.

AU - Sakakibara, T.

AU - Van Duijn, J.

AU - Balicas, L.

AU - Millican, J. N.

AU - MacAluso, R. T.

AU - Chan, Julia Y.

PY - 2006

Y1 - 2006

N2 - Strongly frustrated magnetism of the metallic pyrochlore oxide Pr2Ir2O7 has been revealed by single crystal study. While Pr 4f moments have an antiferromagnetic RKKY interaction energy scale of |T*|=20K mediated by Ir 5d-conduction electrons, no magnetic long-range order is found except for partial spin freezing at 120mK. Instead, the Kondo effect, including a lnT dependence in the resistivity, emerges and leads to a partial screening of the moments below |T*|. Our results indicate that the underscreened moments show spin-liquid behavior below a renormalized correlation scale of 1.7K.

AB - Strongly frustrated magnetism of the metallic pyrochlore oxide Pr2Ir2O7 has been revealed by single crystal study. While Pr 4f moments have an antiferromagnetic RKKY interaction energy scale of |T*|=20K mediated by Ir 5d-conduction electrons, no magnetic long-range order is found except for partial spin freezing at 120mK. Instead, the Kondo effect, including a lnT dependence in the resistivity, emerges and leads to a partial screening of the moments below |T*|. Our results indicate that the underscreened moments show spin-liquid behavior below a renormalized correlation scale of 1.7K.

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DO - 10.1103/PhysRevLett.96.087204

M3 - 学術論文

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VL - 96

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

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ER -

Metallic spin-liquid behavior of the geometrically frustrated kondo lattice Pr2Ir2O7

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