Abstract
We report the results of NQR (nuclear quadrupole resonance) study on SmRu4P12, one of a few candidates for materials showing octupolar ordering. In this study, we firstly succeeded in observing the 101Ru-NQR signal in filled skutterudite compounds RRu 4P12 (R: rare earth). A single 101Ru-NQR signal splits into two resonance lines, having intensity ratio of 3:1, just below the metal-insulator (M-I) transition temperature of 16.5 K. This result gives convincing evidence for symmetry lowering in the ordered state of this compound, namely the cubic Im3 space group for the filled skutterudite compounds is lowered to the trigonal R3. The model of the ordered structure characterized by a wave vector q = (1, 0, 0) satisfactorily explains the observed phenomena in the present study and the M-I transition in this compound.
| Original language | English |
|---|---|
| Article number | 043714 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 76 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 2007 |
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Keywords
- Filled skutterudite
- Metal-insulator transition
- Multipolar ordering
- NQR
- SmRuP
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Observation of symmetry lowering associated with the metal-insulator transition in SmRu4P12 by 101Ru-NQR. / Masaki, Satoru; Mito, Takeshi; Takemura, Masayuki; Wada, Shinji; Harima, Hisatomo; Kikuchi, Daisuke; Sato, Hideyuki; Sugawara, Hitoshi; Takeda, Naoya; Zheng, Guo-Qing.
In: Journal of the Physical Society of Japan, Vol. 76, No. 4, 043714, 04.2007.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Observation of symmetry lowering associated with the metal-insulator transition in SmRu4P12 by 101Ru-NQR
AU - Masaki, Satoru
AU - Mito, Takeshi
AU - Takemura, Masayuki
AU - Wada, Shinji
AU - Harima, Hisatomo
AU - Kikuchi, Daisuke
AU - Sato, Hideyuki
AU - Sugawara, Hitoshi
AU - Takeda, Naoya
AU - Zheng, Guo-Qing
PY - 2007/4
Y1 - 2007/4
N2 - We report the results of NQR (nuclear quadrupole resonance) study on SmRu4P12, one of a few candidates for materials showing octupolar ordering. In this study, we firstly succeeded in observing the 101Ru-NQR signal in filled skutterudite compounds RRu 4P12 (R: rare earth). A single 101Ru-NQR signal splits into two resonance lines, having intensity ratio of 3:1, just below the metal-insulator (M-I) transition temperature of 16.5 K. This result gives convincing evidence for symmetry lowering in the ordered state of this compound, namely the cubic Im3 space group for the filled skutterudite compounds is lowered to the trigonal R3. The model of the ordered structure characterized by a wave vector q = (1, 0, 0) satisfactorily explains the observed phenomena in the present study and the M-I transition in this compound.
AB - We report the results of NQR (nuclear quadrupole resonance) study on SmRu4P12, one of a few candidates for materials showing octupolar ordering. In this study, we firstly succeeded in observing the 101Ru-NQR signal in filled skutterudite compounds RRu 4P12 (R: rare earth). A single 101Ru-NQR signal splits into two resonance lines, having intensity ratio of 3:1, just below the metal-insulator (M-I) transition temperature of 16.5 K. This result gives convincing evidence for symmetry lowering in the ordered state of this compound, namely the cubic Im3 space group for the filled skutterudite compounds is lowered to the trigonal R3. The model of the ordered structure characterized by a wave vector q = (1, 0, 0) satisfactorily explains the observed phenomena in the present study and the M-I transition in this compound.
KW - Filled skutterudite
KW - Metal-insulator transition
KW - Multipolar ordering
KW - NQR
KW - SmRuP
UR - http://www.scopus.com/inward/record.url?scp=34247122806&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34247122806&partnerID=8YFLogxK
U2 - 10.1143/JPSJ.76.043714
DO - 10.1143/JPSJ.76.043714
M3 - Article
AN - SCOPUS:34247122806
VL - 76
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 4
M1 - 043714
ER -