Magnetic excitations in heavy electron state of filled skutterudite Pr xLa1-xFe4P12 (x = 1.00 and 0.85)

Kazuaki Iwasa, Lijie Hao, Tomoo Hasegawa, Kenji Horiuchi, Youichi Murakami, Junya Otsuki, Yoshio Kuramoto, Masahumi Kohgi, Keitaro Kuwahara, Hitoshi Sugawara, Yuji Aoki, Hideyuki Sato

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

PrFe4P12 exhibits clear heavy electron behaviors as well as the phase transition to an antiferro-type ordering of 4f electron state. In this paper, we report on inelastic neutron scattering results for powdered samples of PrxLa1-xFe4P12 (x = 1.00 and 0.85). A clear quasielastic magnetic response is observed, and no distinct signal is seen for crystal-field (CF) excitations in the heavy electron state. A model with strong hybridization between conduction electrons and Pr 3+ 4f2 electrons [J. Otsuki et al.: J. Phys. Soc. Jpn. 74 (2005) 200 and 2082] is consistent with the observed magnetic response. This result shows that the heavy electron behavior of PrxLa 1-xFe4P12 (x = 1.00 and 0.85) originates from the Kondo effect associated with low-lying singlet-triplet CF states.

Original languageEnglish
Article number063706
JournalJournal of the Physical Society of Japan
Volume77
Issue number6
DOIs
Publication statusPublished - Jun 1 2008
Externally publishedYes

Fingerprint

electron states
crystal field theory
excitation
electrons
Kondo effect
conduction electrons
inelastic scattering
neutron scattering

Keywords

  • Dynamical magnetic susceptibility
  • Heavy electron
  • Neutron scattering
  • Rare-earth filled skutterudite

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Magnetic excitations in heavy electron state of filled skutterudite Pr xLa1-xFe4P12 (x = 1.00 and 0.85). / Iwasa, Kazuaki; Hao, Lijie; Hasegawa, Tomoo; Horiuchi, Kenji; Murakami, Youichi; Otsuki, Junya; Kuramoto, Yoshio; Kohgi, Masahumi; Kuwahara, Keitaro; Sugawara, Hitoshi; Aoki, Yuji; Sato, Hideyuki.

In: Journal of the Physical Society of Japan, Vol. 77, No. 6, 063706, 01.06.2008.

Research output: Contribution to journalArticle

Iwasa, K, Hao, L, Hasegawa, T, Horiuchi, K, Murakami, Y, Otsuki, J, Kuramoto, Y, Kohgi, M, Kuwahara, K, Sugawara, H, Aoki, Y & Sato, H 2008, 'Magnetic excitations in heavy electron state of filled skutterudite Pr xLa1-xFe4P12 (x = 1.00 and 0.85)', Journal of the Physical Society of Japan, vol. 77, no. 6, 063706. https://doi.org/10.1143/JPSJ.77.063706
Iwasa, Kazuaki ; Hao, Lijie ; Hasegawa, Tomoo ; Horiuchi, Kenji ; Murakami, Youichi ; Otsuki, Junya ; Kuramoto, Yoshio ; Kohgi, Masahumi ; Kuwahara, Keitaro ; Sugawara, Hitoshi ; Aoki, Yuji ; Sato, Hideyuki. / Magnetic excitations in heavy electron state of filled skutterudite Pr xLa1-xFe4P12 (x = 1.00 and 0.85). In: Journal of the Physical Society of Japan. 2008 ; Vol. 77, No. 6.
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AU - Horiuchi, Kenji

AU - Murakami, Youichi

AU - Otsuki, Junya

AU - Kuramoto, Yoshio

AU - Kohgi, Masahumi

AU - Kuwahara, Keitaro

AU - Sugawara, Hitoshi

AU - Aoki, Yuji

AU - Sato, Hideyuki

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N2 - PrFe4P12 exhibits clear heavy electron behaviors as well as the phase transition to an antiferro-type ordering of 4f electron state. In this paper, we report on inelastic neutron scattering results for powdered samples of PrxLa1-xFe4P12 (x = 1.00 and 0.85). A clear quasielastic magnetic response is observed, and no distinct signal is seen for crystal-field (CF) excitations in the heavy electron state. A model with strong hybridization between conduction electrons and Pr 3+ 4f2 electrons [J. Otsuki et al.: J. Phys. Soc. Jpn. 74 (2005) 200 and 2082] is consistent with the observed magnetic response. This result shows that the heavy electron behavior of PrxLa 1-xFe4P12 (x = 1.00 and 0.85) originates from the Kondo effect associated with low-lying singlet-triplet CF states.

AB - PrFe4P12 exhibits clear heavy electron behaviors as well as the phase transition to an antiferro-type ordering of 4f electron state. In this paper, we report on inelastic neutron scattering results for powdered samples of PrxLa1-xFe4P12 (x = 1.00 and 0.85). A clear quasielastic magnetic response is observed, and no distinct signal is seen for crystal-field (CF) excitations in the heavy electron state. A model with strong hybridization between conduction electrons and Pr 3+ 4f2 electrons [J. Otsuki et al.: J. Phys. Soc. Jpn. 74 (2005) 200 and 2082] is consistent with the observed magnetic response. This result shows that the heavy electron behavior of PrxLa 1-xFe4P12 (x = 1.00 and 0.85) originates from the Kondo effect associated with low-lying singlet-triplet CF states.

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KW - Neutron scattering

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