Multipolar Phase Transition in the 4$f^2$ fcc lattice compound PrCdNi$_{4}$
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866916678878625792 |
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| author | Kusanose, Yuka Shimura, Yasuyuki Umeo, Kazunori Kawata, Naomi Takabatake, Toshiro Terashima, Taichi Kikugawa, Naoki Konoike, Takako Hattori, Yuya Nawa, Kazuhiro Wu, Hung-Cheng Sato, Taku J Onimaru, Takahiro |
| author_facet | Kusanose, Yuka Shimura, Yasuyuki Umeo, Kazunori Kawata, Naomi Takabatake, Toshiro Terashima, Taichi Kikugawa, Naoki Konoike, Takako Hattori, Yuya Nawa, Kazuhiro Wu, Hung-Cheng Sato, Taku J Onimaru, Takahiro |
| contents | Transport and magnetic properties of a 4$f^{2}$ fcc lattice compound, PrCdNi$_4$, were studied. The magnetic susceptibility, $χ(T)$, follows the Curie--Weiss law from 300 K to 20 K, as expected for a free Pr$^{3+}$ ion. As the temperature decreases below 5 K, $χ(T)$ approaches a constant, indicating van-Vleck paramagnetic behavior. The specific heat, $C(T)$, displays a broad shoulder at around 4 K, which can be reproduced by a doublet triplet two-level model with an energy gap of 12 K. These results suggest a non-magnetic $Γ_3$ doublet ground state of the Pr$^{3+}$ ion in the cubic crystalline electric field. $C(T)$ exhibits a peak at $T_{\rm O}$ = 1.0 K and this peak remains robust against magnetic fields up to 5 T. In powder neutron diffraction measurements, no magnetic reflection was observed at 0.32 K $<$ $T_{\rm O}$. Two anomalies at $B$ = 2.1 and 5.3 T in magnetoresistance $ρ(B)$ at 0.05 K likely originate from switching in the order parameter. These results suggest that the phase transition at $T_{\rm O}$ is ascribed to an antiferro-type order of the electric quadrupole or magnetic octupole of the $Γ_3$ doublet in the 4$f^2$ fcc lattice. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_05865 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multipolar Phase Transition in the 4$f^2$ fcc lattice compound PrCdNi$_{4}$ Kusanose, Yuka Shimura, Yasuyuki Umeo, Kazunori Kawata, Naomi Takabatake, Toshiro Terashima, Taichi Kikugawa, Naoki Konoike, Takako Hattori, Yuya Nawa, Kazuhiro Wu, Hung-Cheng Sato, Taku J Onimaru, Takahiro Strongly Correlated Electrons Transport and magnetic properties of a 4$f^{2}$ fcc lattice compound, PrCdNi$_4$, were studied. The magnetic susceptibility, $χ(T)$, follows the Curie--Weiss law from 300 K to 20 K, as expected for a free Pr$^{3+}$ ion. As the temperature decreases below 5 K, $χ(T)$ approaches a constant, indicating van-Vleck paramagnetic behavior. The specific heat, $C(T)$, displays a broad shoulder at around 4 K, which can be reproduced by a doublet triplet two-level model with an energy gap of 12 K. These results suggest a non-magnetic $Γ_3$ doublet ground state of the Pr$^{3+}$ ion in the cubic crystalline electric field. $C(T)$ exhibits a peak at $T_{\rm O}$ = 1.0 K and this peak remains robust against magnetic fields up to 5 T. In powder neutron diffraction measurements, no magnetic reflection was observed at 0.32 K $<$ $T_{\rm O}$. Two anomalies at $B$ = 2.1 and 5.3 T in magnetoresistance $ρ(B)$ at 0.05 K likely originate from switching in the order parameter. These results suggest that the phase transition at $T_{\rm O}$ is ascribed to an antiferro-type order of the electric quadrupole or magnetic octupole of the $Γ_3$ doublet in the 4$f^2$ fcc lattice. |
| title | Multipolar Phase Transition in the 4$f^2$ fcc lattice compound PrCdNi$_{4}$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2504.05865 |