PHYSICAL REVIEW B 102, 054417 (2020) Absolute crystal and magnetic chiralities in the langasite compound Ba3NbFe3Si2O14 determined by polarized neutron and x-ray scattering

N. Qureshi,1,* A. Bombardi,2 S. Picozzi,3 P. Barone ,3 E. Lelièvre-Berna ,1 X. Xu,4 C. Stock,5,6 D. F. McMorrow,7 A. Hearmon ,8 F. Fabrizi,8 P. G. Radaelli,8 S.-W. Cheong,4 and L. C. Chapon1,2 1Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France 2Diamond Light Source, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom 3Consiglio Nazionale Delle Ricerche, Istituto SPIN, UOS l’Aquila, Sede di Lavoro CNR-SPIN c/o Universitá G. d’Annunzio, 66100 Chieti, Italy 4Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA 5Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom 6School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom 7London Centre for Nanotechnology and Department of Physics and Astronomy, University College London (UCL), Gower Street, London WC1E 6BT, United Kingdom 8Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom