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| Format: | Preprint |
| Veröffentlicht: |
2024
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| Online-Zugang: | https://arxiv.org/abs/2402.07730 |
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| _version_ | 1866910910005641216 |
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| author | Sheng, Jieming Wang, Le Jiang, Wenrui Ge, Han Zhao, Nan Li, Tiantian Kofu, Maiko Yu, Dehong Zhu, Wei Mei, Jia-Wei Wang, Zhentao Wu, Liusuo |
| author_facet | Sheng, Jieming Wang, Le Jiang, Wenrui Ge, Han Zhao, Nan Li, Tiantian Kofu, Maiko Yu, Dehong Zhu, Wei Mei, Jia-Wei Wang, Zhentao Wu, Liusuo |
| contents | Continuum of spin excitations observed in inelastic neutron scattering experiments are often considered as a strong evidence of quantum spin liquid formation. When quantum spin liquid is indeed the ground state of a disorder-free magnetic compound, the elementary excitation is no longer the conventional spin waves (magnons). Instead, the magnons fractionalize into spinons, leaving only a two-spinon continuum detectable in inelastic neutron scattering experiments. For a clean ordered antiferromagnet, it was unclear if we can observe a continuous spectrum similar to the ones in a quantum spin liquid state. Here we show that the magnetically ordered state in Na$_2$BaCo(PO$_4$)$_2$ is able to host a spin excitation continuum induced by strong quantum fluctuations. Thus, a second thought is necessary when concluding such continuum as signature of quantum spin liquid in new material explorations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_07730 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Continuum of spin excitations in an ordered magnet Sheng, Jieming Wang, Le Jiang, Wenrui Ge, Han Zhao, Nan Li, Tiantian Kofu, Maiko Yu, Dehong Zhu, Wei Mei, Jia-Wei Wang, Zhentao Wu, Liusuo Strongly Correlated Electrons Continuum of spin excitations observed in inelastic neutron scattering experiments are often considered as a strong evidence of quantum spin liquid formation. When quantum spin liquid is indeed the ground state of a disorder-free magnetic compound, the elementary excitation is no longer the conventional spin waves (magnons). Instead, the magnons fractionalize into spinons, leaving only a two-spinon continuum detectable in inelastic neutron scattering experiments. For a clean ordered antiferromagnet, it was unclear if we can observe a continuous spectrum similar to the ones in a quantum spin liquid state. Here we show that the magnetically ordered state in Na$_2$BaCo(PO$_4$)$_2$ is able to host a spin excitation continuum induced by strong quantum fluctuations. Thus, a second thought is necessary when concluding such continuum as signature of quantum spin liquid in new material explorations. |
| title | Continuum of spin excitations in an ordered magnet |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2402.07730 |