Superconductivity of cerium under pressures up to 54GPa
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866909117442949120 |
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| author | Zhang, Yanan Su, Dajun Shan, Zhaoyang Yang, Zihan Zhang, Jiawen Li, Rui Smidman, Michael Yuan, Huiqiu |
| author_facet | Zhang, Yanan Su, Dajun Shan, Zhaoyang Yang, Zihan Zhang, Jiawen Li, Rui Smidman, Michael Yuan, Huiqiu |
| contents | Cerium is a fascinating element due to its diverse physical properties, which include forming various crystal structures ($γ$, $α$, $α^{'}$, $α^{''}$ and $ε$), mixed valence behavior and superconductivity, making it an ideal platform for investigating the interplay between different electronic states. Here, we present a comprehensive transport study of cerium under hydrostatic pressures up to 54 GPa. Upon applying pressure, cerium undergoes the $α$ $\rightarrow$ $α^{''}$ transition at around 4.9 GPa, which is accompanied by the appearance of superconductivity with $T_{\rm c}$ of 0.4 K, and $T_{\rm c}$ slightly increases to 0.5 K at 11.4 GPa. At 14.3 GPa, $T_{\rm c}$ suddenly increases when the $α^{''}$ phase transforms into the $ε$ phase, reaching a maximum value of 1.25 K at around 17.2 GPa. Upon further increasing the pressure, $T_{\rm c}$ monotonically decreases. Together with the results of previous studies, our findings suggest that the evolution of superconductivity in cerium is closely correlated with the multiple pressure-induced structural transitions and corresponding unusual electronic structures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_04377 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Superconductivity of cerium under pressures up to 54GPa Zhang, Yanan Su, Dajun Shan, Zhaoyang Yang, Zihan Zhang, Jiawen Li, Rui Smidman, Michael Yuan, Huiqiu Superconductivity Strongly Correlated Electrons Cerium is a fascinating element due to its diverse physical properties, which include forming various crystal structures ($γ$, $α$, $α^{'}$, $α^{''}$ and $ε$), mixed valence behavior and superconductivity, making it an ideal platform for investigating the interplay between different electronic states. Here, we present a comprehensive transport study of cerium under hydrostatic pressures up to 54 GPa. Upon applying pressure, cerium undergoes the $α$ $\rightarrow$ $α^{''}$ transition at around 4.9 GPa, which is accompanied by the appearance of superconductivity with $T_{\rm c}$ of 0.4 K, and $T_{\rm c}$ slightly increases to 0.5 K at 11.4 GPa. At 14.3 GPa, $T_{\rm c}$ suddenly increases when the $α^{''}$ phase transforms into the $ε$ phase, reaching a maximum value of 1.25 K at around 17.2 GPa. Upon further increasing the pressure, $T_{\rm c}$ monotonically decreases. Together with the results of previous studies, our findings suggest that the evolution of superconductivity in cerium is closely correlated with the multiple pressure-induced structural transitions and corresponding unusual electronic structures. |
| title | Superconductivity of cerium under pressures up to 54GPa |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2308.04377 |