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| Auteurs principaux: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2026
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| Accès en ligne: | https://arxiv.org/abs/2602.22451 |
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| _version_ | 1866912927723814912 |
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| author | Tuvia, Gal Kang, Ruizhe Golovanova, Diana Chen, Yuqian Wang, Yidi Ma, Zeyu Liu, Mengke Grossman, Carly Sung, Suk Hyun Shotton, Justin Zhu, Jiahui Martinez, David Baggari, Ismail El Yan, Binghai Morr, Dirk K. Ran, Sheng Hoffman, Jennifer E. |
| author_facet | Tuvia, Gal Kang, Ruizhe Golovanova, Diana Chen, Yuqian Wang, Yidi Ma, Zeyu Liu, Mengke Grossman, Carly Sung, Suk Hyun Shotton, Justin Zhu, Jiahui Martinez, David Baggari, Ismail El Yan, Binghai Morr, Dirk K. Ran, Sheng Hoffman, Jennifer E. |
| contents | Electron interactions can drive magnetism, superconductivity, and topology. However, the realization of these phases remains limited in van der Waals materials, and the full landscape of strong correlations remains uncharted in any context. While interactions between conduction electrons and localized spins yield a well-known competition between heavy fermions (Kondo hybridization) and magnetic order (RKKY exchange), such spin-driven competition represents only part of the correlated electron phase diagram. Here we demonstrate that a heavy-fermion state can also compete with charge order, such as the charge density wave (CDW) state typical in the van der Waals $4f$ rare-earth tritellurides (RTe$_3$). We exploit the spatially-extended $5f$ orbitals of $β$-UTe$_3$ to enhance Kondo hybridization compared to its isostructural RTe$_3$ cousins. Our scanning tunneling spectroscopy on $β$-UTe$_3$ shows Fano resonances characteristic of the heavy fermion state, while our quasiparticle interference imaging reveals the disappearance of Fermi-level nesting and the appearance of flat bands. We extend the tritelluride tight-binding model to include Kondo coupling and quantify the Fermi surface reconstruction. Consistent with the destruction of nesting, we observe no CDW in $β$-UTe$_3$. Our expansion of the Kondo phase diagram beyond spin-mediated competition opens new possibilities for proximity-induced phase engineering in correlated van der Waals heterostructures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_22451 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Kondo Reshapes Multiple Orders in a $5f$ van der Waals Material Tuvia, Gal Kang, Ruizhe Golovanova, Diana Chen, Yuqian Wang, Yidi Ma, Zeyu Liu, Mengke Grossman, Carly Sung, Suk Hyun Shotton, Justin Zhu, Jiahui Martinez, David Baggari, Ismail El Yan, Binghai Morr, Dirk K. Ran, Sheng Hoffman, Jennifer E. Strongly Correlated Electrons Electron interactions can drive magnetism, superconductivity, and topology. However, the realization of these phases remains limited in van der Waals materials, and the full landscape of strong correlations remains uncharted in any context. While interactions between conduction electrons and localized spins yield a well-known competition between heavy fermions (Kondo hybridization) and magnetic order (RKKY exchange), such spin-driven competition represents only part of the correlated electron phase diagram. Here we demonstrate that a heavy-fermion state can also compete with charge order, such as the charge density wave (CDW) state typical in the van der Waals $4f$ rare-earth tritellurides (RTe$_3$). We exploit the spatially-extended $5f$ orbitals of $β$-UTe$_3$ to enhance Kondo hybridization compared to its isostructural RTe$_3$ cousins. Our scanning tunneling spectroscopy on $β$-UTe$_3$ shows Fano resonances characteristic of the heavy fermion state, while our quasiparticle interference imaging reveals the disappearance of Fermi-level nesting and the appearance of flat bands. We extend the tritelluride tight-binding model to include Kondo coupling and quantify the Fermi surface reconstruction. Consistent with the destruction of nesting, we observe no CDW in $β$-UTe$_3$. Our expansion of the Kondo phase diagram beyond spin-mediated competition opens new possibilities for proximity-induced phase engineering in correlated van der Waals heterostructures. |
| title | Kondo Reshapes Multiple Orders in a $5f$ van der Waals Material |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2602.22451 |