Magnetic-field-induced charge order in the filled skutterudite SmRu4P12 : Evidence from resonant and nonresonant x-ray diffraction
Physical Review B Volume 89 Issue 16
Page 161116-1-161116-5
published_at 2014-04-25
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| File | |
| Title ( eng ) |
Magnetic-field-induced charge order in the filled skutterudite SmRu4P12 : Evidence from resonant and nonresonant x-ray diffraction
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| Creator |
Michimura Shinji
Inami Toshiya
Hayashi Yuya
Fushiya Kengo
Matsuda Tatsuma D.
Higashinaka Ryuji
Aoki Yuji
Sugawara Hitoshi
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| Source Title |
Physical Review B
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| Volume | 89 |
| Issue | 16 |
| Start Page | 161116-1 |
| End Page | 161116-5 |
| Abstract |
The antiferromagnetic ordered phase in SmRu4P12 below the metal-insulator transition at T MI = 16.5 K with an unresolved transition at T∗ ～ 14 K has been studied by resonant and nonresonant x-ray diffraction in magnetic fields. In the intermediate phase, a nonresonant Thomson scattering with q = (1,0,0) is induced by applying a magnetic field, which is presumably caused by atomic displacements reflecting the charge order in the p band, as predicted theoretically [R. Shiina, J. Phys. Soc. Jpn. 82, 083713 (2013)]. Simultaneously, the antiferromagnetic moment of Sm is enhanced along the field direction, which is considered to reflect the staggered ordering of the Γ 7 −Γ 8 crystal-field states (scalar or hexadecapole order). The present results show that the orbital-dependent p-f hybridization in association with the nesting instability in the p band gives rise to the unconventional charge order similarly with PrRu4P12 and PrFe4P12.
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| Descriptions |
This work was supported by Grants-in-Aid for Scientific Research (No. 21204456, No. 21102515, and No. 2430087) from JSPS and MEXT, and by a Basic Science Research Grant from the Sumitomo Foundation.
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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2014-04-25 |
| Rights |
Copyright (c) 2014 American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[NCID] AA11187113
[DOI] 10.1103/PhysRevB.89.161116
[DOI] http://dx.doi.org/10.1103/PhysRevB.89.161116
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