Qureshi, N;
Bombardi, A;
Picozzi, S;
Barone, P;
Lelièvre-Berna, E;
Xu, X;
Stock, C;
... Chapon, LC; + view all
(2020)
Absolute crystal and magnetic chiralities in the langasite compound Ba3NbFe3Si2O14 determined by polarized neutron and x-ray scattering.
Physical Review B
, 102
(5)
, Article 054417. 10.1103/PhysRevB.102.054417.
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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.
| Type: | Article |
|---|---|
| Title: | Absolute crystal and magnetic chiralities in the langasite compound Ba3NbFe3Si2O14 determined by polarized neutron and x-ray scattering |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.102.054417 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.102.054417 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10109750 |
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