Metal-insulator transition under high pressure in PrFe4P 12

Hiroyuki Hidaka; Ikuma Ando; Hisashi Kotegawa; Tatsuo C. Kobayashi; Hisatomo Harima; Miki Kobayashi; Hitoshi Sugawara; Hideyuki Sato

doi:10.1016/j.physb.2005.01.334

Metal-insulator transition under high pressure in PrFe₄P ₁₂

Hiroyuki Hidaka, Ikuma Ando, Hisashi Kotegawa, Tatsuo C. Kobayashi, Hisatomo Harima, Miki Kobayashi, Hitoshi Sugawara, Hideyuki Sato

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

1 Citation (Scopus)

Abstract

We have studied the electrical resistivity in a skutterudite compound PrFe4P12 under high pressure. An antiferro-quadrupolar ordering temperature TQ decreases monotonously with increasing pressure up to 2.4 GPa. Above 2.4 GPa, the metal-insulator (M-I) transition appears. By applying magnetic field, this M-I transition is suppressed easily and heavy-fermion state is realized. The observed Kondo effect and the field-induced heavy-fermion state at high pressure suggest that the quadrupolar interactions of the f electrons of Pr3+ survive even in the insulator phase.

Original language	English
Pages (from-to)	886-888
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	359-361
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2005.01.334
Publication status	Published - Apr 30 2005

Keywords

Filled skutterudite
Metal-insulator transition

ASJC Scopus subject areas

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

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title = "Metal-insulator transition under high pressure in PrFe4P 12",

abstract = "We have studied the electrical resistivity in a skutterudite compound PrFe4P12 under high pressure. An antiferro-quadrupolar ordering temperature TQ decreases monotonously with increasing pressure up to 2.4 GPa. Above 2.4 GPa, the metal-insulator (M-I) transition appears. By applying magnetic field, this M-I transition is suppressed easily and heavy-fermion state is realized. The observed Kondo effect and the field-induced heavy-fermion state at high pressure suggest that the quadrupolar interactions of the f electrons of Pr3+ survive even in the insulator phase.",

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T1 - Metal-insulator transition under high pressure in PrFe4P 12

AU - Hidaka, Hiroyuki

AU - Ando, Ikuma

AU - Kotegawa, Hisashi

AU - Kobayashi, Tatsuo C.

AU - Harima, Hisatomo

AU - Kobayashi, Miki

AU - Sugawara, Hitoshi

AU - Sato, Hideyuki

PY - 2005/4/30

Y1 - 2005/4/30

N2 - We have studied the electrical resistivity in a skutterudite compound PrFe4P12 under high pressure. An antiferro-quadrupolar ordering temperature TQ decreases monotonously with increasing pressure up to 2.4 GPa. Above 2.4 GPa, the metal-insulator (M-I) transition appears. By applying magnetic field, this M-I transition is suppressed easily and heavy-fermion state is realized. The observed Kondo effect and the field-induced heavy-fermion state at high pressure suggest that the quadrupolar interactions of the f electrons of Pr3+ survive even in the insulator phase.

AB - We have studied the electrical resistivity in a skutterudite compound PrFe4P12 under high pressure. An antiferro-quadrupolar ordering temperature TQ decreases monotonously with increasing pressure up to 2.4 GPa. Above 2.4 GPa, the metal-insulator (M-I) transition appears. By applying magnetic field, this M-I transition is suppressed easily and heavy-fermion state is realized. The observed Kondo effect and the field-induced heavy-fermion state at high pressure suggest that the quadrupolar interactions of the f electrons of Pr3+ survive even in the insulator phase.

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