Evidence for hidden quadrupolar fluctuations behind the octupole order in Ce0.7La0.3B6 from resonant x-ray diffraction in magnetic fields
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00038217
ID | 38217 |
file | |
creator |
Michimura, Shinji
Inami, Toshiya
Otsubo, Toru
Iga, Fumitoshi
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NDC |
Physics
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abstract | The multipole ordered phase in Ce 0.7 La 0.3 B 6, emerging below 1.5 K and named phase IV, has been studied by resonant x-ray diffraction in magnetic fields. By utilizing diamond x-ray phase plates to rotate the incident linear polarization and a conventional crystal analyzer system, full linear polarization analysis has been performed to identify the order parameters. The analysis shows that the Γ 5g (O yz, O zx, O xy) quadrupoles are more induced by the field than the Γ 3g (O 20 and O 22) quadrupoles on the Γ 5u (T β x+y+z) antiferro-octupole order in phase IV. The problem is that this result is contradictory to a mean-field calculation, which inevitably gives the Γ 3g quadrupole as the main induced moment. This result indicates that the Γ 5g quadrupole order is close in energy. We consider that a large fluctuation of the Γ 5g quadrupole is hidden behind the primary ordering of the Γ 5u octupole and that the multipolar fluctuation significantly affects the ordering phenomenon.
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description | This work was supported by Grants-in-Aid for Scientific Research (Nos. 21204456 and 24340087) from the Japan Society for the Promotion of Science (JSPS), by a Grant-in-Aid for Scientific Research on Innovative Areas “Heavy Electrons” (No. 21102515) from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), and by a Basic Science Research Grant from the Sumitomo Foundation.
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journal title |
Physical Review B
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volume | Volume 89
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issue | Issue 1
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start page | 014422-1
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end page | 014422-13
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date of issued | 2014-01-24
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publisher | American Physical Society
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ncid | |
publisher doi | |
language |
eng
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nii type |
Journal Article
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HU type |
Journal Articles
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DCMI type | text
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format | appliation/pdf
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text version | publisher
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rights | Copyright (c) 2014 American Physical Society
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relation url | |
department |
Graduate School of Advanced Sciences of Matter
Institute for Advanced Materials Research
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