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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2509.04641 |
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| _version_ | 1866912620016041984 |
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| author | Lou, Rui Mende, Max Vocaturo, Riccardo Zhang, Hao Dong, Qingxin Li, Man Ding, Pengfei Cheng, Erjian Liao, Zhiguang Zhang, Yu Lin, Junfa Firouzmandi, Reza Kocsis, Vilmos Corredor, Laura T. Prots, Yurii Suvorov, Oleksandr Jana, Anupam Fujii, Jun Vobornik, Ivana Janson, Oleg Zhu, Wenliang Brink, Jeroen van den Krellner, Cornelius Pan, Minghu Wang, Bosen Xia, Tianlong Cheng, Jinguang Wang, Shancai Felser, Claudia Büchner, Bernd Borisenko, Sergey Yu, Rong Vyalikh, Denis V. Fedorov, Alexander |
| author_facet | Lou, Rui Mende, Max Vocaturo, Riccardo Zhang, Hao Dong, Qingxin Li, Man Ding, Pengfei Cheng, Erjian Liao, Zhiguang Zhang, Yu Lin, Junfa Firouzmandi, Reza Kocsis, Vilmos Corredor, Laura T. Prots, Yurii Suvorov, Oleksandr Jana, Anupam Fujii, Jun Vobornik, Ivana Janson, Oleg Zhu, Wenliang Brink, Jeroen van den Krellner, Cornelius Pan, Minghu Wang, Bosen Xia, Tianlong Cheng, Jinguang Wang, Shancai Felser, Claudia Büchner, Bernd Borisenko, Sergey Yu, Rong Vyalikh, Denis V. Fedorov, Alexander |
| contents | Applying angle-resolved photoemission spectroscopy and density functional theory calculations, we present compelling spectroscopic evidence demonstrating the intertwining and mutual interaction between the Kondo and kagome sublattices in heavy-fermion intermetallic compound YbV$_6$Sn$_6$. We reveal the Yb 4$f$-derived states near the Fermi level, along with the presence of bulk kagome bands and topological surface states. We unveil strong interactions between the 4$f$ and itinerant electrons, where the kagome bands hosting the Dirac fermions and van Hove singularities predominate. Such findings are well described using a $c$-$f$ hybridization model. On the other hand, our systematic characterization of magnetic properties demonstrates an unusually enhanced antiferromagnetic ordering, where the kagome-derived van Hove singularities near $E_F$ play a vital role in determining the unconventional nature of the Ruderman-Kittel-Kasuya-Yosida interaction and Kondo coupling. These unique kagome-state-mediated exchange interactions have never been reported before and could lead to a novel phase diagram and various quantum critical behaviors in YbV$_6$Sn$_6$ and its siblings. Our results not only expand the family of exotic quantum phases entangled with kagome structure to the strongly correlated regime, but also establish YbV$_6$Sn$_6$ as an unprecedented platform to explore unconventional many-body physics beyond the standard Kondo picture. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_04641 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Strongly Entangled Kondo and Kagome Lattices and the Emergent Magnetic Ground State in Heavy-Fermion Kagome Metal YbV$_6$Sn$_6$ Lou, Rui Mende, Max Vocaturo, Riccardo Zhang, Hao Dong, Qingxin Li, Man Ding, Pengfei Cheng, Erjian Liao, Zhiguang Zhang, Yu Lin, Junfa Firouzmandi, Reza Kocsis, Vilmos Corredor, Laura T. Prots, Yurii Suvorov, Oleksandr Jana, Anupam Fujii, Jun Vobornik, Ivana Janson, Oleg Zhu, Wenliang Brink, Jeroen van den Krellner, Cornelius Pan, Minghu Wang, Bosen Xia, Tianlong Cheng, Jinguang Wang, Shancai Felser, Claudia Büchner, Bernd Borisenko, Sergey Yu, Rong Vyalikh, Denis V. Fedorov, Alexander Strongly Correlated Electrons Materials Science Applying angle-resolved photoemission spectroscopy and density functional theory calculations, we present compelling spectroscopic evidence demonstrating the intertwining and mutual interaction between the Kondo and kagome sublattices in heavy-fermion intermetallic compound YbV$_6$Sn$_6$. We reveal the Yb 4$f$-derived states near the Fermi level, along with the presence of bulk kagome bands and topological surface states. We unveil strong interactions between the 4$f$ and itinerant electrons, where the kagome bands hosting the Dirac fermions and van Hove singularities predominate. Such findings are well described using a $c$-$f$ hybridization model. On the other hand, our systematic characterization of magnetic properties demonstrates an unusually enhanced antiferromagnetic ordering, where the kagome-derived van Hove singularities near $E_F$ play a vital role in determining the unconventional nature of the Ruderman-Kittel-Kasuya-Yosida interaction and Kondo coupling. These unique kagome-state-mediated exchange interactions have never been reported before and could lead to a novel phase diagram and various quantum critical behaviors in YbV$_6$Sn$_6$ and its siblings. Our results not only expand the family of exotic quantum phases entangled with kagome structure to the strongly correlated regime, but also establish YbV$_6$Sn$_6$ as an unprecedented platform to explore unconventional many-body physics beyond the standard Kondo picture. |
| title | Strongly Entangled Kondo and Kagome Lattices and the Emergent Magnetic Ground State in Heavy-Fermion Kagome Metal YbV$_6$Sn$_6$ |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2509.04641 |