Ru-NQR studies on filled skutterudite compounds R Ru4 P12 (R = La, Nd, Sm)

S. Masaki, T. Mito, M. Takemura, S. Wada, H. Harima, D. Kikuchi, H. Sato, H. Sugawara, N. Takeda, Guo-Qing Zheng

Research output: Contribution to journalArticle

Abstract

We report nuclear quadrupole resonance (NQR) studies on Ru-sites of filled skutterudite compounds R Ru4 P12 (R = La, Nd, Sm) in zero magnetic field. For NdRu4 P12, the 101Ru-NQR signal disappears below TC = 1.6 K, which is indicative of the transformation into the ferromagnetically ordered ground state. For SmRu4 P12, a single 101Ru-NQR line splits into two lines below the metal-insulator transition temperature TMI = 16.5 K with the intensity ratio of 3 : 1. This result gives evidence that there are two inequivalent Ru-sites with different electric field gradient. The intensity ratio leads to a conclusion that the symmetry is lowered below TMI from a cubic Im over(3, -) space group to a trigonal R over(3, -) one.

Original languageEnglish
Pages (from-to)1630-1632
Number of pages3
JournalPhysica B: Condensed Matter
Volume403
Issue number5-9
DOIs
Publication statusPublished - Apr 1 2008

Fingerprint

Nuclear quadrupole resonance
nuclear quadrupole resonance
Metal insulator transition
resonance lines
Ground state
Superconducting transition temperature
transition temperature
Electric fields
insulators
Magnetic fields
gradients
ground state
electric fields
symmetry
magnetic fields
metals

Keywords

  • Filled skutterudite
  • Metal-insulator transition
  • NQR
  • SmRu P

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Ru-NQR studies on filled skutterudite compounds R Ru4 P12 (R = La, Nd, Sm). / Masaki, S.; Mito, T.; Takemura, M.; Wada, S.; Harima, H.; Kikuchi, D.; Sato, H.; Sugawara, H.; Takeda, N.; Zheng, Guo-Qing.

In: Physica B: Condensed Matter, Vol. 403, No. 5-9, 01.04.2008, p. 1630-1632.

Research output: Contribution to journalArticle

Masaki, S, Mito, T, Takemura, M, Wada, S, Harima, H, Kikuchi, D, Sato, H, Sugawara, H, Takeda, N & Zheng, G-Q 2008, 'Ru-NQR studies on filled skutterudite compounds R Ru4 P12 (R = La, Nd, Sm)', Physica B: Condensed Matter, vol. 403, no. 5-9, pp. 1630-1632. https://doi.org/10.1016/j.physb.2007.10.205
Masaki S, Mito T, Takemura M, Wada S, Harima H, Kikuchi D et al. Ru-NQR studies on filled skutterudite compounds R Ru4 P12 (R = La, Nd, Sm). Physica B: Condensed Matter. 2008 Apr 1;403(5-9):1630-1632. https://doi.org/10.1016/j.physb.2007.10.205
Masaki, S. ; Mito, T. ; Takemura, M. ; Wada, S. ; Harima, H. ; Kikuchi, D. ; Sato, H. ; Sugawara, H. ; Takeda, N. ; Zheng, Guo-Qing. / Ru-NQR studies on filled skutterudite compounds R Ru4 P12 (R = La, Nd, Sm). In: Physica B: Condensed Matter. 2008 ; Vol. 403, No. 5-9. pp. 1630-1632.
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AU - Wada, S.

AU - Harima, H.

AU - Kikuchi, D.

AU - Sato, H.

AU - Sugawara, H.

AU - Takeda, N.

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AB - We report nuclear quadrupole resonance (NQR) studies on Ru-sites of filled skutterudite compounds R Ru4 P12 (R = La, Nd, Sm) in zero magnetic field. For NdRu4 P12, the 101Ru-NQR signal disappears below TC = 1.6 K, which is indicative of the transformation into the ferromagnetically ordered ground state. For SmRu4 P12, a single 101Ru-NQR line splits into two lines below the metal-insulator transition temperature TMI = 16.5 K with the intensity ratio of 3 : 1. This result gives evidence that there are two inequivalent Ru-sites with different electric field gradient. The intensity ratio leads to a conclusion that the symmetry is lowered below TMI from a cubic Im over(3, -) space group to a trigonal R over(3, -) one.

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