Exotic heavy-fermion state in the filled skutterudite PrFe4P12 uncovered by the de Haas-van Alphen effect

H. Sugawara; T. D. Matsuda; K. Abe; Y. Aoki; H. Sato; S. Nojiri; Y. Inada; R. Settai; Y. Onuki

Exotic heavy-fermion state in the filled skutterudite PrFe₄P₁₂ uncovered by the de Haas-van Alphen effect

H. Sugawara, T. D. Matsuda, K. Abe, Y. Aoki, H. Sato, S. Nojiri, Y. Inada, R. Settai, Y. Onuki

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

Abstract

We report the de Haas-van Alphen (dHvA) experiment on the filled skutterudite PrFe₄P₁₂ exhibiting apparent Kondo-like behaviors in the transport and thermal properties. We have found enormously enhanced cyclotron effective mass m_c^* = 81 m₀ in the high field phase, which indicates that PrFe₄P₁₂ is the first Pr compound in which really heavy mass has been unambiguously confirmed. Also in the low field nonmagnetic ordered phase (LOP), we observed the dHvA branch with m_c^* = 10 m₀ that is quite heavy taking into account its small Fermi surface volume (0.15% of the Brillouin zone size). The insensitivity of mass in LOP against the magnetic field suggests that the quadrupolar interaction plays a main role both in the mass renormalization and the LOP formation.

Original language	English
Article number	134411
Pages (from-to)	1344111-1344115
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	13
Publication status	Published - Oct 1 2002
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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title = "Exotic heavy-fermion state in the filled skutterudite PrFe4P12 uncovered by the de Haas-van Alphen effect",

abstract = "We report the de Haas-van Alphen (dHvA) experiment on the filled skutterudite PrFe4P12 exhibiting apparent Kondo-like behaviors in the transport and thermal properties. We have found enormously enhanced cyclotron effective mass mc* = 81 m0 in the high field phase, which indicates that PrFe4P12 is the first Pr compound in which really heavy mass has been unambiguously confirmed. Also in the low field nonmagnetic ordered phase (LOP), we observed the dHvA branch with mc* = 10 m0 that is quite heavy taking into account its small Fermi surface volume (0.15% of the Brillouin zone size). The insensitivity of mass in LOP against the magnetic field suggests that the quadrupolar interaction plays a main role both in the mass renormalization and the LOP formation.",

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T1 - Exotic heavy-fermion state in the filled skutterudite PrFe4P12 uncovered by the de Haas-van Alphen effect

AU - Sugawara, H.

AU - Matsuda, T. D.

AU - Abe, K.

AU - Aoki, Y.

AU - Sato, H.

AU - Nojiri, S.

AU - Inada, Y.

AU - Settai, R.

AU - Onuki, Y.

PY - 2002/10/1

Y1 - 2002/10/1

N2 - We report the de Haas-van Alphen (dHvA) experiment on the filled skutterudite PrFe4P12 exhibiting apparent Kondo-like behaviors in the transport and thermal properties. We have found enormously enhanced cyclotron effective mass mc* = 81 m0 in the high field phase, which indicates that PrFe4P12 is the first Pr compound in which really heavy mass has been unambiguously confirmed. Also in the low field nonmagnetic ordered phase (LOP), we observed the dHvA branch with mc* = 10 m0 that is quite heavy taking into account its small Fermi surface volume (0.15% of the Brillouin zone size). The insensitivity of mass in LOP against the magnetic field suggests that the quadrupolar interaction plays a main role both in the mass renormalization and the LOP formation.

AB - We report the de Haas-van Alphen (dHvA) experiment on the filled skutterudite PrFe4P12 exhibiting apparent Kondo-like behaviors in the transport and thermal properties. We have found enormously enhanced cyclotron effective mass mc* = 81 m0 in the high field phase, which indicates that PrFe4P12 is the first Pr compound in which really heavy mass has been unambiguously confirmed. Also in the low field nonmagnetic ordered phase (LOP), we observed the dHvA branch with mc* = 10 m0 that is quite heavy taking into account its small Fermi surface volume (0.15% of the Brillouin zone size). The insensitivity of mass in LOP against the magnetic field suggests that the quadrupolar interaction plays a main role both in the mass renormalization and the LOP formation.

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JF - Physical Review B-Condensed Matter

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Exotic heavy-fermion state in the filled skutterudite PrFe₄P₁₂ uncovered by the de Haas-van Alphen effect

Abstract

ASJC Scopus subject areas

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