Show simple item record

dc.contributor.author
Dzsaber, Sami
dc.contributor.author
Yan, Xinlin
dc.contributor.author
Taupin, Mathieu
dc.contributor.author
Eguchi, Gaku
dc.contributor.author
Prokofiev, Andrey
dc.contributor.author
Shiroka, Toni
dc.contributor.author
Blaha, Peter
dc.contributor.author
Rubel, Oleg
dc.contributor.author
Grefe, Sarah E.
dc.contributor.author
Lai, Hsin-Hua
dc.contributor.author
Si, Qimiao
dc.contributor.author
Paschen, Silke
dc.date.accessioned
2021-03-03T16:51:02Z
dc.date.available
2021-03-03T08:32:31Z
dc.date.available
2021-03-03T16:51:02Z
dc.date.issued
2021-02-23
dc.identifier.issn
0027-8424
dc.identifier.issn
1091-6490
dc.identifier.other
10.1073/pnas.2013386118
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/472630
dc.identifier.doi
10.3929/ethz-b-000472630
dc.description.abstract
Nontrivial topology in condensed-matter systems enriches quantum states of matter to go beyond either the classification into metals and insulators in terms of conventional band theory or that of symmetry-broken phases by Landau’s order parameter framework. So far, focus has been on weakly interacting systems, and little is known about the limit of strong electron correlations. Heavy fermion systems are a highly versatile platform to explore this regime. Here we report the discovery of a giant spontaneous Hall effect in the Kondo semimetal Ce3Bi4Pd3 that is noncentrosymmetric but preserves time-reversal symmetry. We attribute this finding to Weyl nodes—singularities of the Berry curvature—that emerge in the immediate vicinity of the Fermi level due to the Kondo interaction. We stress that this phenomenon is distinct from the previously detected anomalous Hall effect in materials with broken time-reversal symmetry; instead, it manifests an extreme topological response that requires a beyond-perturbation-theory description of the previously proposed nonlinear Hall effect. The large magnitude of the effect in even tiny electric and zero magnetic fields as well as its robust bulk nature may aid the exploitation in topological quantum devices.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
National Academy of Sciences
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Weyl semimetal
en_US
dc.subject
Kondo effect
en_US
dc.subject
spontaneous Hall effect
en_US
dc.subject
preserved time-reversal symmetry
en_US
dc.title
Giant spontaneous Hall effect in a nonmagnetic Weyl–Kondo semimetal
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2021-02-19
ethz.journal.title
Proceedings of the National Academy of Sciences of the United States of America
ethz.journal.volume
118
en_US
ethz.journal.issue
8
en_US
ethz.journal.abbreviated
Proc Natl Acad Sci U S A
ethz.pages.start
e2013386118
en_US
ethz.size
7 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Exotic matter and correlated quantum phenomena
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Washington, DC
en_US
ethz.publication.status
published
en_US
ethz.grant.agreementno
169455
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
Projekte MINT
ethz.date.deposited
2021-03-03T08:32:56Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-03-03T16:51:11Z
ethz.rosetta.lastUpdated
2022-03-29T05:36:17Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Giant%20spontaneous%20Hall%20effect%20in%20a%20nonmagnetic%20Weyl%E2%80%93Kondo%20semimetal&rft.jtitle=Proceedings%20of%20the%20National%20Academy%20of%20Sciences%20of%20the%20United%20States%20of%20America&rft.date=2021-02-23&rft.volume=118&rft.issue=8&rft.spage=e2013386118&rft.issn=0027-8424&1091-6490&rft.au=Dzsaber,%20Sami&Yan,%20Xinlin&Taupin,%20Mathieu&Eguchi,%20Gaku&Prokofiev,%20Andrey&rft.genre=article&rft_id=info:doi/10.1073/pnas.2013386118&
 Search print copy at ETH Library

Files in this item

Thumbnail

Publication type

Show simple item record