Using magnetic dynamics to measure the spin gap in a candidate Kitaev material
Abstract Spin-orbit entangled materials have attracted widespread interest due to the novel magnetic phenomena arising from the interplay between spin-orbit coupling and electronic correlations. However, the intricate nature of spin interactions within Kiteav materials complicates the precise measur...
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| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-02-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-025-00737-8 |
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| author | Xinyi Jiang Qingzheng Qiu Cheng Peng Hoyoung Jang Wenjie Chen Xianghong Jin Li Yue Byungjune Lee Sang-Youn Park Minseok Kim Hyeong-Do Kim Xinqiang Cai Qizhi Li Tao Dong Nanlin Wang Joshua J. Turner Yuan Li Yao Wang Yingying Peng |
| author_facet | Xinyi Jiang Qingzheng Qiu Cheng Peng Hoyoung Jang Wenjie Chen Xianghong Jin Li Yue Byungjune Lee Sang-Youn Park Minseok Kim Hyeong-Do Kim Xinqiang Cai Qizhi Li Tao Dong Nanlin Wang Joshua J. Turner Yuan Li Yao Wang Yingying Peng |
| author_sort | Xinyi Jiang |
| collection | DOAJ |
| description | Abstract Spin-orbit entangled materials have attracted widespread interest due to the novel magnetic phenomena arising from the interplay between spin-orbit coupling and electronic correlations. However, the intricate nature of spin interactions within Kiteav materials complicates the precise measurement of low-energy spin excitations. Using Na2Co2TeO6 as an example, we study these low-energy spin excitations using the time-resolved resonant elastic x-ray scattering (tr-REXS). Our observations unveil remarkably slow spin dynamics at the magnetic peak, whose recovery timescale is several nanoseconds. This timescale aligns with the extrapolated spin gap of ~1 μeV, obtained by density matrix renormalization group (DMRG) simulations in the thermodynamic limit. The consistency demonstrates the efficacy of tr-REXS in discerning low-energy spin gaps inaccessible to conventional spectroscopic techniques. |
| format | Article |
| id | doaj-art-57a50cde53f04fab8d7f4df93d22f3ac |
| institution | Kabale University |
| issn | 2397-4648 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj-art-57a50cde53f04fab8d7f4df93d22f3ac2025-02-02T12:07:17ZengNature Portfolionpj Quantum Materials2397-46482025-02-011011910.1038/s41535-025-00737-8Using magnetic dynamics to measure the spin gap in a candidate Kitaev materialXinyi Jiang0Qingzheng Qiu1Cheng Peng2Hoyoung Jang3Wenjie Chen4Xianghong Jin5Li Yue6Byungjune Lee7Sang-Youn Park8Minseok Kim9Hyeong-Do Kim10Xinqiang Cai11Qizhi Li12Tao Dong13Nanlin Wang14Joshua J. Turner15Yuan Li16Yao Wang17Yingying Peng18International Center for Quantum Materials, School of Physics, Peking UniversityInternational Center for Quantum Materials, School of Physics, Peking UniversityStanford Institute for Materials and Energy Science, Stanford University and SLAC National Accelerator LaboratoryPAL-XFEL, Pohang Accelerator Laboratory, POSTECHInternational Center for Quantum Materials, School of Physics, Peking UniversityInternational Center for Quantum Materials, School of Physics, Peking UniversityInternational Center for Quantum Materials, School of Physics, Peking UniversityMax Planck POSTECH/Korea Research Initiative, Center for Complex Phase MaterialsPAL-XFEL, Pohang Accelerator Laboratory, POSTECHPAL-XFEL, Pohang Accelerator Laboratory, POSTECHPAL-XFEL, Pohang Accelerator Laboratory, POSTECHInternational Center for Quantum Materials, School of Physics, Peking UniversityInternational Center for Quantum Materials, School of Physics, Peking UniversityInternational Center for Quantum Materials, School of Physics, Peking UniversityInternational Center for Quantum Materials, School of Physics, Peking UniversityStanford Institute for Materials and Energy Science, Stanford University and SLAC National Accelerator LaboratoryInternational Center for Quantum Materials, School of Physics, Peking UniversityDepartment of Chemistry, Emory UniversityInternational Center for Quantum Materials, School of Physics, Peking UniversityAbstract Spin-orbit entangled materials have attracted widespread interest due to the novel magnetic phenomena arising from the interplay between spin-orbit coupling and electronic correlations. However, the intricate nature of spin interactions within Kiteav materials complicates the precise measurement of low-energy spin excitations. Using Na2Co2TeO6 as an example, we study these low-energy spin excitations using the time-resolved resonant elastic x-ray scattering (tr-REXS). Our observations unveil remarkably slow spin dynamics at the magnetic peak, whose recovery timescale is several nanoseconds. This timescale aligns with the extrapolated spin gap of ~1 μeV, obtained by density matrix renormalization group (DMRG) simulations in the thermodynamic limit. The consistency demonstrates the efficacy of tr-REXS in discerning low-energy spin gaps inaccessible to conventional spectroscopic techniques.https://doi.org/10.1038/s41535-025-00737-8 |
| spellingShingle | Xinyi Jiang Qingzheng Qiu Cheng Peng Hoyoung Jang Wenjie Chen Xianghong Jin Li Yue Byungjune Lee Sang-Youn Park Minseok Kim Hyeong-Do Kim Xinqiang Cai Qizhi Li Tao Dong Nanlin Wang Joshua J. Turner Yuan Li Yao Wang Yingying Peng Using magnetic dynamics to measure the spin gap in a candidate Kitaev material npj Quantum Materials |
| title | Using magnetic dynamics to measure the spin gap in a candidate Kitaev material |
| title_full | Using magnetic dynamics to measure the spin gap in a candidate Kitaev material |
| title_fullStr | Using magnetic dynamics to measure the spin gap in a candidate Kitaev material |
| title_full_unstemmed | Using magnetic dynamics to measure the spin gap in a candidate Kitaev material |
| title_short | Using magnetic dynamics to measure the spin gap in a candidate Kitaev material |
| title_sort | using magnetic dynamics to measure the spin gap in a candidate kitaev material |
| url | https://doi.org/10.1038/s41535-025-00737-8 |
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