<div class="csl-bib-body">
<div class="csl-entry">Zocco, D. A. (2023, March 6). <i>Controlling electronic topology in Weyl-Kondo semimetals</i> [Conference Presentation]. APS March Meeting 2023, Las Vegas, United States of America (the).</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/190695
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dc.description.abstract
The ability to control topological states at will holds great promise for its application in topological quantum devices. Heavy fermion compounds are well known for their excellent tunability, and provide an exceptional platform to explore the intersection of strong electronic correlations and electronic topology [1]. In this talk, I will focus on tuning experiments performed on heavy fermion semimetals in which Weyl nodes form in a setting of broken inversion and preserved time-reversal symmetries. In Ce₃Bi₄Pd₃, which exemplifies the notion of Weyl-Kondo semimetal (WKSM) [2,3], and in which a giant spontaneous Hall effect has been observed [4], we found that the application of relatively modest magnetic fields suppresses the topological signatures; we attribute this effect to the annihilation of Weyl nodes at a topological quantum phase transition [5]. CeRu₄Sn₆ is another WKSM candidate material [6]. Interestingly, inelastic neutron scattering experiments revealed that the material is quantum critical without tuning [7]. I will present pressure-tuning investigations of CeRu4Sn6, and discuss whether the WKSM state may nucleate out of quantum critical fluctuations [8].
en
dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.language.iso
en
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dc.subject
Kondo semimetal
en
dc.title
Controlling electronic topology in Weyl-Kondo semimetals
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.relation.grantno
I 4047-N27
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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
