Probing magnetic-field-induced multipolar ordering through field-angle-resolved magnetostriction and thermal expansion in PrIr$_2$Zn$_{20}$
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915689659367424 |
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| author | Okamoto, Naoki Kono, Yohei Onimaru, Takahiro Matsumoto, Keisuke T. Hattori, Kazumasa Kittaka, Shunichiro |
| author_facet | Okamoto, Naoki Kono, Yohei Onimaru, Takahiro Matsumoto, Keisuke T. Hattori, Kazumasa Kittaka, Shunichiro |
| contents | We performed field-angle-resolved magnetostriction and thermal-expansion measurements on PrIr$_2$Zn$_{20}$, a cubic non-Kramers compound exhibiting antiferroquadrupolar order below $T_{\rm Q}=0.125$ K. Thermal expansion exhibits two qualitatively different anomalies under magnetic fields applied along the $[001]$ direction, providing experimental support for the existence of an intermediate A phase previously reported. Furthermore, comparison between the experimental results and theoretical modeling indicates a strong anisotropic coupling of the $O_{20}$ quadrupolar moment, which plays a key role in stabilizing the A phase. These findings demonstrate that multipolar states in non-Kramers systems can be effectively tuned by magnetic-field orientation, providing insights into the anisotropic nature of quadrupolar interactions. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2511_21039 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing magnetic-field-induced multipolar ordering through field-angle-resolved magnetostriction and thermal expansion in PrIr$_2$Zn$_{20}$ Okamoto, Naoki Kono, Yohei Onimaru, Takahiro Matsumoto, Keisuke T. Hattori, Kazumasa Kittaka, Shunichiro Strongly Correlated Electrons We performed field-angle-resolved magnetostriction and thermal-expansion measurements on PrIr$_2$Zn$_{20}$, a cubic non-Kramers compound exhibiting antiferroquadrupolar order below $T_{\rm Q}=0.125$ K. Thermal expansion exhibits two qualitatively different anomalies under magnetic fields applied along the $[001]$ direction, providing experimental support for the existence of an intermediate A phase previously reported. Furthermore, comparison between the experimental results and theoretical modeling indicates a strong anisotropic coupling of the $O_{20}$ quadrupolar moment, which plays a key role in stabilizing the A phase. These findings demonstrate that multipolar states in non-Kramers systems can be effectively tuned by magnetic-field orientation, providing insights into the anisotropic nature of quadrupolar interactions. |
| title | Probing magnetic-field-induced multipolar ordering through field-angle-resolved magnetostriction and thermal expansion in PrIr$_2$Zn$_{20}$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2511.21039 |