Universal scaling behavior of transport properties in non-magnetic RuO2
Abstract As a prototypical altermagnet, RuO2 has been subject to many controversial reports regarding its magnetic ground state and the existence of the crystal Hall effect. We obtained a high-quality RuO2 single crystal with a residual resistivity ratio (RRR = 152), and carefully measured its magne...
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Nature Portfolio
2025-08-01
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| Series: | Communications Materials |
| Online Access: | https://doi.org/10.1038/s43246-025-00905-0 |
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| author | Xin Peng Zhihao Liu Shengnan Zhang Yi Zhou Yuran Sun Yahui Su Chunxiang Wu Tingyu Zhou Le Liu Yazhou Li Hangdong Wang Jinhu Yang Bin Chen Yuke Li Chuanying Xi Jianhua Du Zhiwei Jiao Quansheng Wu Minghu Fang |
| author_facet | Xin Peng Zhihao Liu Shengnan Zhang Yi Zhou Yuran Sun Yahui Su Chunxiang Wu Tingyu Zhou Le Liu Yazhou Li Hangdong Wang Jinhu Yang Bin Chen Yuke Li Chuanying Xi Jianhua Du Zhiwei Jiao Quansheng Wu Minghu Fang |
| author_sort | Xin Peng |
| collection | DOAJ |
| description | Abstract As a prototypical altermagnet, RuO2 has been subject to many controversial reports regarding its magnetic ground state and the existence of the crystal Hall effect. We obtained a high-quality RuO2 single crystal with a residual resistivity ratio (RRR = 152), and carefully measured its magnetization, longitudinal resistivity (ρ x x ) and Hall resistivity (ρ y x ) in magnetic field up to 35 T. We also calculated its electronic bands and Fermi surface, and conducted numerical simulations for its transport properties. It was found that no magnetic transition occurs below 400 K, and that all the transport properties are consistent with the numerical simulation results, indicating that the magneto-transport properties originate from the intrinsic electronic structure and are dominated by the Lorentz force. Particularly, no crystal Hall effects were observed in our RuO2 samples and both magnetoresistance and Hall resistivity follow a scaling behavior. Additionally, by comparing theoretical calculations with experimental data, we found that the magneto-transport properties calculated using the altermagnetic structure are not consistent with the experimental observations, whereas those calculated based on the non-magnetic structure show excellent agreement. These results demonstrate that RuO2 is a typical semimetal, rather than an altermagnet. |
| format | Article |
| id | doaj-art-4e6c6e02c19a455f9fb1fc83a4654b4f |
| institution | DOAJ |
| issn | 2662-4443 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
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| series | Communications Materials |
| spelling | doaj-art-4e6c6e02c19a455f9fb1fc83a4654b4f2025-08-20T03:05:06ZengNature PortfolioCommunications Materials2662-44432025-08-01611710.1038/s43246-025-00905-0Universal scaling behavior of transport properties in non-magnetic RuO2Xin Peng0Zhihao Liu1Shengnan Zhang2Yi Zhou3Yuran Sun4Yahui Su5Chunxiang Wu6Tingyu Zhou7Le Liu8Yazhou Li9Hangdong Wang10Jinhu Yang11Bin Chen12Yuke Li13Chuanying Xi14Jianhua Du15Zhiwei Jiao16Quansheng Wu17Minghu Fang18Department of Physics, China Jiliang UniversityBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesBeijing Polytechnic CollegeDepartment of Physics, China Jiliang UniversityDepartment of Physics, China Jiliang UniversityDepartment of Physics, China Jiliang UniversitySchool of Physics, Zhejiang UniversitySchool of Physics, Zhejiang UniversitySchool of Physics, Zhejiang UniversitySchool of Physics, Hangzhou Normal UniversitySchool of Physics, Hangzhou Normal UniversitySchool of Physics, Hangzhou Normal UniversitySchool of Physics, Hangzhou Normal UniversitySchool of Physics, Hangzhou Normal UniversityAnhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of SciencesDepartment of Physics, China Jiliang UniversityDepartment of Physics, China Jiliang UniversityBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesSchool of Physics, Zhejiang UniversityAbstract As a prototypical altermagnet, RuO2 has been subject to many controversial reports regarding its magnetic ground state and the existence of the crystal Hall effect. We obtained a high-quality RuO2 single crystal with a residual resistivity ratio (RRR = 152), and carefully measured its magnetization, longitudinal resistivity (ρ x x ) and Hall resistivity (ρ y x ) in magnetic field up to 35 T. We also calculated its electronic bands and Fermi surface, and conducted numerical simulations for its transport properties. It was found that no magnetic transition occurs below 400 K, and that all the transport properties are consistent with the numerical simulation results, indicating that the magneto-transport properties originate from the intrinsic electronic structure and are dominated by the Lorentz force. Particularly, no crystal Hall effects were observed in our RuO2 samples and both magnetoresistance and Hall resistivity follow a scaling behavior. Additionally, by comparing theoretical calculations with experimental data, we found that the magneto-transport properties calculated using the altermagnetic structure are not consistent with the experimental observations, whereas those calculated based on the non-magnetic structure show excellent agreement. These results demonstrate that RuO2 is a typical semimetal, rather than an altermagnet.https://doi.org/10.1038/s43246-025-00905-0 |
| spellingShingle | Xin Peng Zhihao Liu Shengnan Zhang Yi Zhou Yuran Sun Yahui Su Chunxiang Wu Tingyu Zhou Le Liu Yazhou Li Hangdong Wang Jinhu Yang Bin Chen Yuke Li Chuanying Xi Jianhua Du Zhiwei Jiao Quansheng Wu Minghu Fang Universal scaling behavior of transport properties in non-magnetic RuO2 Communications Materials |
| title | Universal scaling behavior of transport properties in non-magnetic RuO2 |
| title_full | Universal scaling behavior of transport properties in non-magnetic RuO2 |
| title_fullStr | Universal scaling behavior of transport properties in non-magnetic RuO2 |
| title_full_unstemmed | Universal scaling behavior of transport properties in non-magnetic RuO2 |
| title_short | Universal scaling behavior of transport properties in non-magnetic RuO2 |
| title_sort | universal scaling behavior of transport properties in non magnetic ruo2 |
| url | https://doi.org/10.1038/s43246-025-00905-0 |
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