<div class="csl-bib-body">
<div class="csl-entry">Zocco, D. A. (2025, March 18). <i>Correlations and topology in heavy fermion compounds</i> [Conference Presentation]. Joint March Meeting and April Meeting: Global Physics Summit 2025, Anaheim, United States of America (the).</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/224005
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dc.description.abstract
In heavy fermion compounds, the localized f-electron states hybridize with mobile conduction electrons, creating very narrow bands via the Kondo effect. Some of their most intriguing properties – from strange metallicity and unconventional superconductivity to correlation-driven topology – are more recently found in frustrated lattice and moiré flat band systems; whether Kondo physics underlies all these phenomena is a topic of intense interest [1].
The Weyl-Kondo semimetal state [2-4], first observed in the heavy fermion compound Ce3Bi4Pd3¬¬ [2,4], exhibits giant transport and thermodynamic signatures of topology, and can be genuinely tuned via the application of magnetic field [5]. In CeRu4Sn6, on the other hand, we discovered a topological semimetal phase that emerges from the material’s quantum critical state and displays a dome structure as a function of magnetic field and pressure [6]. This work has advanced a new design principle for correlation-driven topological phases, namely that a topological semimetal can emerge out of quantum criticality beyond the Landau quasiparticle picture.
[1] J. G. Checkelsky et al., Nat. Rev. Mater. 9, 509 (2024)
[2] S. Dzsaber et al., Phys. Rev. Lett. 118, 246601 (2017)
[3] H.-H. Lai et al., Proc. Natl. Acad. Sci. U.S.A. 115, 93 (2018)
[4] S. Dzsaber et al., Proc. Natl. Acad. Sci. U.S.A. 118, e2013386118 (2021)
[5] S. Dzsaber et al., Nat. Commun. 13, 5729 (2022)
[6] D. M. Kirschbaum et al., arXiv: 2404.15924
en
dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.description.sponsorship
European Commission
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dc.language.iso
en
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dc.subject
Kondo semimetal
en
dc.title
Correlations and topology in heavy fermion compounds
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.relation.grantno
I 4047-N27
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dc.relation.grantno
F 8600
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dc.relation.grantno
I 5868-N
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dc.relation.grantno
101055088
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dc.type.category
Conference Presentation
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tuw.publication.invited
invited
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tuw.project.title
Extreme Spin-Bahn-Kopplung für neue Quantenzustände
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tuw.project.title
Zentrum für korrelierte Quantenmaterialien und festkörperbasierte Quantensysteme
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tuw.project.title
Quantum phase transitions and collective modes
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tuw.project.title
Correlation-driven metallic topology
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tuw.researchTopic.id
Q6
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tuw.researchTopic.name
Quantum Many-body Systems Physics
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tuw.researchTopic.value
100
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tuw.publication.orgunit
E138-04 - Forschungsbereich Quantum Materials
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tuw.author.orcid
0000-0002-6958-0416
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tuw.event.name
Joint March Meeting and April Meeting: Global Physics Summit 2025
