Absence of magnetic order and magnetic fluctuations in RuO$_{2}$
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915591655260160 |
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| author | Song, Jiabin Mu, Chao Zhu, Shilin Zhou, Xuebo Wu, Wei Long, Yun-ze Luo, Jianlin Li, Zheng |
| author_facet | Song, Jiabin Mu, Chao Zhu, Shilin Zhou, Xuebo Wu, Wei Long, Yun-ze Luo, Jianlin Li, Zheng |
| contents | A novel magnetic class blending ferromagnetism and antiferromagnetism, termed altermagnetism, has gained significant attention for its staggered order in coordinate and momentum spaces, time-reversal symmetry-breaking phenomena, and promising applications in spintronics. Ruthenium dioxide (RuO$_{2}$) has been considered a candidate material for altermagnetism, yet the presence of magnetic moments on Ru atoms remains a subject of debate. In this study, we systematically investigated the magnetic properties of RuO$_{2}$ powder using nuclear quadrupole resonance (NQR) measurements. The NQR spectra show that there is no internal magnetic field. Furthermore, the temperature independence of spin-lattice relaxation rate, $1/T_1T$, proves that there are no magnetic fluctuations. Our results unambiguously demonstrate that Ru atoms in RuO$_{2}$ possess neither static magnetic moments nor fluctuating magnetic moments, and thus RuO$_{2}$ does not possess the magnetic characteristics essential for altermagnetism. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_00399 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Absence of magnetic order and magnetic fluctuations in RuO$_{2}$ Song, Jiabin Mu, Chao Zhu, Shilin Zhou, Xuebo Wu, Wei Long, Yun-ze Luo, Jianlin Li, Zheng Strongly Correlated Electrons A novel magnetic class blending ferromagnetism and antiferromagnetism, termed altermagnetism, has gained significant attention for its staggered order in coordinate and momentum spaces, time-reversal symmetry-breaking phenomena, and promising applications in spintronics. Ruthenium dioxide (RuO$_{2}$) has been considered a candidate material for altermagnetism, yet the presence of magnetic moments on Ru atoms remains a subject of debate. In this study, we systematically investigated the magnetic properties of RuO$_{2}$ powder using nuclear quadrupole resonance (NQR) measurements. The NQR spectra show that there is no internal magnetic field. Furthermore, the temperature independence of spin-lattice relaxation rate, $1/T_1T$, proves that there are no magnetic fluctuations. Our results unambiguously demonstrate that Ru atoms in RuO$_{2}$ possess neither static magnetic moments nor fluctuating magnetic moments, and thus RuO$_{2}$ does not possess the magnetic characteristics essential for altermagnetism. |
| title | Absence of magnetic order and magnetic fluctuations in RuO$_{2}$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2511.00399 |