Hidden k -Space Magnetoelectric Multipoles in Nonmagnetic Ferroelectrics
dc.contributor.author
Bhowal, Sayantika
dc.contributor.author
Collins, Stephen P.
dc.contributor.author
Spaldin, Nicola
dc.date.accessioned
2022-04-19T15:09:12Z
dc.date.available
2022-04-04T03:06:02Z
dc.date.available
2022-04-19T15:09:12Z
dc.date.issued
2022-03-18
dc.identifier.issn
0031-9007
dc.identifier.issn
1079-7114
dc.identifier.other
10.1103/PhysRevLett.128.116402
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/540673
dc.identifier.doi
10.3929/ethz-b-000540673
dc.description.abstract
In condensed matter systems, the electronic degrees of freedom are often entangled to form complex composites, known as hidden orders, which give rise to unusual properties, while escaping detection in conventional experiments. Here we demonstrate the existence of hidden k-space magnetoelectric multipoles in nonmagnetic systems with broken space-inversion symmetry. These k-space magnetoelectric multipoles are reciprocal to the real-space charge dipoles associated with the broken inversion symmetry. Using the prototypical ferroelectric PbTiO3 as an example, we show that their origin is a spin asymmetry in momentum space resulting from the broken space inversion symmetry associated with the ferroelectric polarization. In PbTiO3, the k-space spin asymmetry corresponds to a pure k-space magnetoelectric toroidal moment, which can be detected using magnetic Compton scattering, an established tool for probing magnetism in ferromagnets or ferrimagnets with a net spin polarization, which has not been exploited to date for nonmagnetic systems. In particular, the k-space magnetoelectric toroidal moment combined with the spin-orbit interaction manifest in an antisymmetric magnetic Compton profile that can be reversed using an electric field. Our work suggests an experimental route to directly measuring and tuning hidden k-space magnetoelectric multipoles via specially designed magnetic Compton scattering measurements.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
American Physical Society
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Hidden k -Space Magnetoelectric Multipoles in Nonmagnetic Ferroelectrics
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
Physical Review Letters
ethz.journal.volume
128
en_US
ethz.journal.issue
11
en_US
ethz.journal.abbreviated
Phys. Rev. Lett.
ethz.pages.start
116402
en_US
ethz.size
6 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Hidden, entangled and resonating orders/HERO
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Ridge, NY
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02160 - Dep. Materialwissenschaft / Dep. of Materials::03903 - Spaldin, Nicola A. / Spaldin, Nicola A.
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02160 - Dep. Materialwissenschaft / Dep. of Materials::03903 - Spaldin, Nicola A. / Spaldin, Nicola A.
ethz.grant.agreementno
810451
ethz.grant.fundername
EC
ethz.grant.funderDoi
10.13039/501100000780
ethz.grant.program
H2020
ethz.date.deposited
2022-04-04T03:06:06Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2022-04-19T15:09:20Z
ethz.rosetta.lastUpdated
2023-02-07T00:52:05Z
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true
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true
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