Probing interplay of topological properties and electron correlation in TaIrTe4 via nonlinear Hall effect
Abstract Studying the interplay of electron correlation and topology is crucial for discovering new quantum states, such as the fractional quantum spin Hall effect and topological superconductors. Unlike linear transport, nonlinear electrical responses, which encode both symmetry and topological fea...
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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/s41467-025-61347-3 |
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| author | Haotian Jiang Tairan Xi Jiangxu Li Yangchen He Hongrui Ma Yulu Mao Takashi Taniguchi Kenji Watanabe Daniel A. Rhodes Yang Zhang Jun Xiao Ying Wang |
| author_facet | Haotian Jiang Tairan Xi Jiangxu Li Yangchen He Hongrui Ma Yulu Mao Takashi Taniguchi Kenji Watanabe Daniel A. Rhodes Yang Zhang Jun Xiao Ying Wang |
| author_sort | Haotian Jiang |
| collection | DOAJ |
| description | Abstract Studying the interplay of electron correlation and topology is crucial for discovering new quantum states, such as the fractional quantum spin Hall effect and topological superconductors. Unlike linear transport, nonlinear electrical responses, which encode both symmetry and topological features remain largely unexplored in systems with electron correlation and topology. Here we report that nonlinear Hall measurements reveal the emergence of a correlated state in few-layer topological semimetal TaIrTe₄ below a critical temperature and bias current. This state, exhibiting ultra large nonlinear conductivity, is attributed to the formation of a charge density wave in TaIrTe4 that leads to substantial Berry curvature redistribution. This origin is further supported by the observation of a Raman amplitude mode associated with the charge density wave, enhanced second harmonic generation, and first-principles calculations. Our findings demonstrate that nonlinear electrical probes can access rich phase diagrams in topological materials and highlight the potential of correlated topological systems for developing nonlinear electronics. |
| format | Article |
| id | doaj-art-e89c6d96d28e48ad863837a65a80e1d3 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-e89c6d96d28e48ad863837a65a80e1d32025-08-20T04:03:01ZengNature PortfolioNature Communications2041-17232025-07-011611810.1038/s41467-025-61347-3Probing interplay of topological properties and electron correlation in TaIrTe4 via nonlinear Hall effectHaotian Jiang0Tairan Xi1Jiangxu Li2Yangchen He3Hongrui Ma4Yulu Mao5Takashi Taniguchi6Kenji Watanabe7Daniel A. Rhodes8Yang Zhang9Jun Xiao10Ying Wang11Department of Electrical and Computer Engineering, University of Wisconsin-MadisonDepartment of Materials Science and Engineering, University of Wisconsin-MadisonDepartment of Physics and Astronomy, University of TennesseeDepartment of Materials Science and Engineering, University of Wisconsin-MadisonDepartment of Electrical and Computer Engineering, University of Wisconsin-MadisonDepartment of Electrical and Computer Engineering, University of Wisconsin-MadisonResearch Center for Materials Nanoarchitectonics, National Institute for Materials ScienceResearch Center for Electronic and Optical Materials, National Institute for Materials ScienceDepartment of Materials Science and Engineering, University of Wisconsin-MadisonDepartment of Physics and Astronomy, University of TennesseeDepartment of Electrical and Computer Engineering, University of Wisconsin-MadisonDepartment of Electrical and Computer Engineering, University of Wisconsin-MadisonAbstract Studying the interplay of electron correlation and topology is crucial for discovering new quantum states, such as the fractional quantum spin Hall effect and topological superconductors. Unlike linear transport, nonlinear electrical responses, which encode both symmetry and topological features remain largely unexplored in systems with electron correlation and topology. Here we report that nonlinear Hall measurements reveal the emergence of a correlated state in few-layer topological semimetal TaIrTe₄ below a critical temperature and bias current. This state, exhibiting ultra large nonlinear conductivity, is attributed to the formation of a charge density wave in TaIrTe4 that leads to substantial Berry curvature redistribution. This origin is further supported by the observation of a Raman amplitude mode associated with the charge density wave, enhanced second harmonic generation, and first-principles calculations. Our findings demonstrate that nonlinear electrical probes can access rich phase diagrams in topological materials and highlight the potential of correlated topological systems for developing nonlinear electronics.https://doi.org/10.1038/s41467-025-61347-3 |
| spellingShingle | Haotian Jiang Tairan Xi Jiangxu Li Yangchen He Hongrui Ma Yulu Mao Takashi Taniguchi Kenji Watanabe Daniel A. Rhodes Yang Zhang Jun Xiao Ying Wang Probing interplay of topological properties and electron correlation in TaIrTe4 via nonlinear Hall effect Nature Communications |
| title | Probing interplay of topological properties and electron correlation in TaIrTe4 via nonlinear Hall effect |
| title_full | Probing interplay of topological properties and electron correlation in TaIrTe4 via nonlinear Hall effect |
| title_fullStr | Probing interplay of topological properties and electron correlation in TaIrTe4 via nonlinear Hall effect |
| title_full_unstemmed | Probing interplay of topological properties and electron correlation in TaIrTe4 via nonlinear Hall effect |
| title_short | Probing interplay of topological properties and electron correlation in TaIrTe4 via nonlinear Hall effect |
| title_sort | probing interplay of topological properties and electron correlation in tairte4 via nonlinear hall effect |
| url | https://doi.org/10.1038/s41467-025-61347-3 |
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