Hidden Density-Wave Instability in the Trimer Ruthenate Ba4Ru3O10
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arXiv
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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866914329297682432 |
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| author | Cao, Gang Zhao, Hengdi Bond, Adrienne Cao, Tristan R. Schebel, Gabriel Quane, Arabella Ni, Yifei Zhang, Yu Wall, Logan Nandkishore, Rahul Schlottmann, Pedro Ye, Feng |
| author_facet | Cao, Gang Zhao, Hengdi Bond, Adrienne Cao, Tristan R. Schebel, Gabriel Quane, Arabella Ni, Yifei Zhang, Yu Wall, Logan Nandkishore, Rahul Schlottmann, Pedro Ye, Feng |
| contents | We report a hidden density-wave instability in the trimer-based ruthenate Ba4Ru3O10, previously regarded as a pure antiferromagnet with a phase transition at TA=100 K. This transition is manifested in lattice parameters, transport, thermodynamics, and magnetic susceptibility, yet remains remarkably insensitive to magnetic fields up to at least 14 T, indicating an electronically driven reconstruction. At much lower temperatures T*= 20 K, charge transport becomes strongly nonlinear, exhibiting distinct depinning thresholds, negative differential resistance, pronounced current- and frequency-dependence, and slow collective dynamics in the Hertz range. While each feature is characteristic of density-wave transport, their simultaneous occurrence in an antiferromagnetic oxide is unprecedented. All nonlinear signatures vanish upon only 3% Ir substitution, which preserves the crystal structure and insulating state, ruling out Joule heating or extrinsic artifacts. The wide separation between the electronic reconstruction at TA and the emergence of nonlinear dynamics at T* identifies Ba4Ru3O10 as a rare correlated system hosting a strongly pinned collective electronic state intertwined with antiferromagnetism. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_13443 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Hidden Density-Wave Instability in the Trimer Ruthenate Ba4Ru3O10 Cao, Gang Zhao, Hengdi Bond, Adrienne Cao, Tristan R. Schebel, Gabriel Quane, Arabella Ni, Yifei Zhang, Yu Wall, Logan Nandkishore, Rahul Schlottmann, Pedro Ye, Feng Strongly Correlated Electrons Quantum Physics We report a hidden density-wave instability in the trimer-based ruthenate Ba4Ru3O10, previously regarded as a pure antiferromagnet with a phase transition at TA=100 K. This transition is manifested in lattice parameters, transport, thermodynamics, and magnetic susceptibility, yet remains remarkably insensitive to magnetic fields up to at least 14 T, indicating an electronically driven reconstruction. At much lower temperatures T*= 20 K, charge transport becomes strongly nonlinear, exhibiting distinct depinning thresholds, negative differential resistance, pronounced current- and frequency-dependence, and slow collective dynamics in the Hertz range. While each feature is characteristic of density-wave transport, their simultaneous occurrence in an antiferromagnetic oxide is unprecedented. All nonlinear signatures vanish upon only 3% Ir substitution, which preserves the crystal structure and insulating state, ruling out Joule heating or extrinsic artifacts. The wide separation between the electronic reconstruction at TA and the emergence of nonlinear dynamics at T* identifies Ba4Ru3O10 as a rare correlated system hosting a strongly pinned collective electronic state intertwined with antiferromagnetism. |
| title | Hidden Density-Wave Instability in the Trimer Ruthenate Ba4Ru3O10 |
| topic | Strongly Correlated Electrons Quantum Physics |
| url | https://arxiv.org/abs/2602.13443 |