Room temperature quantum metric effect in TbMn6Sn6
Abstract Quantum geometry, including Berry curvature and the quantum metric, of the electronic Bloch bands has been studied via nonlinear responses in topological materials. Naturally, these material systems with intrinsic strong nonlinear responses also form the key component in nonlinear electroni...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-62096-z |
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| _version_ | 1849764027953053696 |
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| author | Weiyao Zhao Kaijian Xing Yufei Zhao Lei Chen Min Hong Yuefeng Yin Yang Liu Dang Khoa Le Jacob Gayles Fang Tang Yong Fang Binghai Yan Julie Karel |
| author_facet | Weiyao Zhao Kaijian Xing Yufei Zhao Lei Chen Min Hong Yuefeng Yin Yang Liu Dang Khoa Le Jacob Gayles Fang Tang Yong Fang Binghai Yan Julie Karel |
| author_sort | Weiyao Zhao |
| collection | DOAJ |
| description | Abstract Quantum geometry, including Berry curvature and the quantum metric, of the electronic Bloch bands has been studied via nonlinear responses in topological materials. Naturally, these material systems with intrinsic strong nonlinear responses also form the key component in nonlinear electronic devices. However, the previous reported quantum geometry effects are mainly observed at cryogenic temperatures, hindering their application in practical devices. Here we report a tuneable strong room-temperature second-harmonic transport response in a quantum magnet, TbMn6Sn6, which is governed by the quantum metric and can be tuned with applied magnetic fields. We show that around room temperature, which is close to the spontaneous spin-reorientation transition, the magnetic configurations, and therefore the related symmetry breaking phases, are easily controlled via magnetic fields. Our results also show that manipulation of the symmetries of the magnetic structure presents an effective route to tuneable quantum-geometry-based devices. |
| format | Article |
| id | doaj-art-954a032d9c77467e93f022fbc800b4fb |
| institution | DOAJ |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-954a032d9c77467e93f022fbc800b4fb2025-08-20T03:05:14ZengNature PortfolioNature Communications2041-17232025-07-011611810.1038/s41467-025-62096-zRoom temperature quantum metric effect in TbMn6Sn6Weiyao Zhao0Kaijian Xing1Yufei Zhao2Lei Chen3Min Hong4Yuefeng Yin5Yang Liu6Dang Khoa Le7Jacob Gayles8Fang Tang9Yong Fang10Binghai Yan11Julie Karel12Department of Materials Science & Engineering, & ARC Centre of Excellence in Future Low-Energy Electronics Technologies, Monash UniversitySchool of Physics & Astronomy, Monash UniversityDepartment of Condensed Matter Physics, Weizmann Institute of ScienceCentre for Future Materials, University of Southern QueenslandCentre for Future Materials, University of Southern QueenslandDepartment of Materials Science & Engineering, & ARC Centre of Excellence in Future Low-Energy Electronics Technologies, Monash UniversityMonash Centre for Electron Microscopy, Monash UniversityDepartment of Physics, University of South FloridaDepartment of Physics, University of South FloridaJiangsu Laboratory of Advanced Functional Materials, Changshu Institute of TechnologyJiangsu Laboratory of Advanced Functional Materials, Changshu Institute of TechnologyDepartment of Condensed Matter Physics, Weizmann Institute of ScienceDepartment of Materials Science & Engineering, & ARC Centre of Excellence in Future Low-Energy Electronics Technologies, Monash UniversityAbstract Quantum geometry, including Berry curvature and the quantum metric, of the electronic Bloch bands has been studied via nonlinear responses in topological materials. Naturally, these material systems with intrinsic strong nonlinear responses also form the key component in nonlinear electronic devices. However, the previous reported quantum geometry effects are mainly observed at cryogenic temperatures, hindering their application in practical devices. Here we report a tuneable strong room-temperature second-harmonic transport response in a quantum magnet, TbMn6Sn6, which is governed by the quantum metric and can be tuned with applied magnetic fields. We show that around room temperature, which is close to the spontaneous spin-reorientation transition, the magnetic configurations, and therefore the related symmetry breaking phases, are easily controlled via magnetic fields. Our results also show that manipulation of the symmetries of the magnetic structure presents an effective route to tuneable quantum-geometry-based devices.https://doi.org/10.1038/s41467-025-62096-z |
| spellingShingle | Weiyao Zhao Kaijian Xing Yufei Zhao Lei Chen Min Hong Yuefeng Yin Yang Liu Dang Khoa Le Jacob Gayles Fang Tang Yong Fang Binghai Yan Julie Karel Room temperature quantum metric effect in TbMn6Sn6 Nature Communications |
| title | Room temperature quantum metric effect in TbMn6Sn6 |
| title_full | Room temperature quantum metric effect in TbMn6Sn6 |
| title_fullStr | Room temperature quantum metric effect in TbMn6Sn6 |
| title_full_unstemmed | Room temperature quantum metric effect in TbMn6Sn6 |
| title_short | Room temperature quantum metric effect in TbMn6Sn6 |
| title_sort | room temperature quantum metric effect in tbmn6sn6 |
| url | https://doi.org/10.1038/s41467-025-62096-z |
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