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Absolute crystal and magnetic chiralities in the langasite compound Ba3NbFe3Si2O14 determined by polarized neutron and x-ray scattering

Abstract:
We present a combined polarized neutron and x-ray scattering study on two enantiopure langasite single crystals aimed at the determination of their absolute structural and magnetic chiralities and the coupling between them. Our respective data sets unambiguously reveal two samples of opposite structural chirality, where the magnetic handedness is pinned by the structural one. Simple energy considerations of the magnetic exchange and single-ion anisotropy parameters reveal that it is not the Dzyaloshinskii-Moriya interaction but the local single-ion anisotropy on a triangular plaquette which plays a key role in stabilizing one of the two magnetic helices.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physrevb.102.054417

Authors


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Role:
Author
ORCID:
0000-0001-7222-8627
More by this author
Role:
Author
ORCID:
0000-0002-6999-6489


Publisher:
American Physical Society
Journal:
Physical Review B More from this journal
Volume:
102
Issue:
5
Article number:
54417
Publication date:
2020-08-12
Acceptance date:
2020-07-23
DOI:
EISSN:
2469-9969
ISSN:
2469-9950


Language:
English
Keywords:
Pubs id:
1125778
Local pid:
pubs:1125778
Deposit date:
2020-08-13

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