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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2507.01824 |
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| _version_ | 1866913923034251264 |
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| author | Liu, Ruizi Chen, Zehan Cheng, Xingkai Ren, Xiaolin Zhang, Yiyang Wu, Xuezhao Zhang, Chengping Qian, Kun Chan, Ching Ho Liu, Junwei Law, Kam Tuen Shao, Qiming |
| author_facet | Liu, Ruizi Chen, Zehan Cheng, Xingkai Ren, Xiaolin Zhang, Yiyang Wu, Xuezhao Zhang, Chengping Qian, Kun Chan, Ching Ho Liu, Junwei Law, Kam Tuen Shao, Qiming |
| contents | Quantum geometry, including quantum metric and Berry curvature, which describes the topology of electronic states, can induce fascinating physical properties. Symmetry-dependent nonlinear transport has emerged as a sensitive probe of these quantum geometric properties. However, its interplay with strong electronic correlations has rarely been explored in bulk materials, particularly in a Kondo lattice system. Here, we uncover correlation-driven quantum geometry in centrosymmetric antiferromagnetic iron telluride (FeTe). We experimentally observe the quantum metric quadrupole-induced third-order nonlinear transport, whose angular dependence reflects magnetic structure in FeTe. The nonlinear transport signals follow Kondo lattice crossover and vanish at high temperatures. Our theory suggests that a Kondo lattice formed at low temperatures explains the emergence of quantum geometry, which is induced by the opening of a hybridization gap near the Fermi energy. This discovery establishes a paradigm where quantum geometry arises not from static symmetry breaking but from dynamic many-body effects and provides a zero-field probe for sensing antiferromagnetic order. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_01824 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Correlation-driven quantum geometry effects in a Kondo system Liu, Ruizi Chen, Zehan Cheng, Xingkai Ren, Xiaolin Zhang, Yiyang Wu, Xuezhao Zhang, Chengping Qian, Kun Chan, Ching Ho Liu, Junwei Law, Kam Tuen Shao, Qiming Strongly Correlated Electrons Quantum geometry, including quantum metric and Berry curvature, which describes the topology of electronic states, can induce fascinating physical properties. Symmetry-dependent nonlinear transport has emerged as a sensitive probe of these quantum geometric properties. However, its interplay with strong electronic correlations has rarely been explored in bulk materials, particularly in a Kondo lattice system. Here, we uncover correlation-driven quantum geometry in centrosymmetric antiferromagnetic iron telluride (FeTe). We experimentally observe the quantum metric quadrupole-induced third-order nonlinear transport, whose angular dependence reflects magnetic structure in FeTe. The nonlinear transport signals follow Kondo lattice crossover and vanish at high temperatures. Our theory suggests that a Kondo lattice formed at low temperatures explains the emergence of quantum geometry, which is induced by the opening of a hybridization gap near the Fermi energy. This discovery establishes a paradigm where quantum geometry arises not from static symmetry breaking but from dynamic many-body effects and provides a zero-field probe for sensing antiferromagnetic order. |
| title | Correlation-driven quantum geometry effects in a Kondo system |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2507.01824 |