55 citations · 473 across the 65 of their papers we have counts for
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Direct observation of anapoles by neutron diffraction
S. W. Lovesey, T. Chatterji, A. Stunault +2
The scope of magnetic neutron scattering has been expanded by the observation of electronic Dirac dipoles (anapoles) that are polar (parity-odd) and magnetic (time-odd). A zero-mag…
Superchiral photons unveil magnetic circular dichroism
S. W. Lovesey, J. T. Collins, S. P. Collins
Polarization-dependent photon spectroscopy (dichroism) using signal-enhancing superchiral beams is shown to be sensitive to magnetic properties of the sample, whereas previous inve…
Resonant x-ray diffraction from chiral electric-polarization structures
Stephen W. Lovesey, Gerrit van der Laan
Heterostructures of PbTiO/SrTiO superlattices have shown the formation of "polar vortices", in which a continuous rotation of ferroelectric polarization spontaneously forms…
Field-induced magnetic charge in a cubic Laves compound UAl2
S. W. Lovesey, D. D. Khalyavin, G. van der Laan
Magnetic diffraction of polarized neutrons by the cubic Laves compound UAl2 in a magnetic field has unveiled weak Bragg spots that are nominally forbidden. On the one hand, they ca…
Direct observation of electron density reconstruction at the metal-insulator transition in NaOsO3
N. Gurung, N. Leo, S. P. Collins +10
5d transition metal oxides offer new opportunities to test our understanding of the interplay of correlation effects and spin-orbit interactions in materials in the absence of a si…
A unified formulation of dichroic signals using the Borrmann effect and twisted photon beams
Stephen P Collins, Stephen W Lovesey
Dichroic signals derived from the Borrmann effect and a twisted photon beam with topological charge l = 1 are formulated with an effective wavevector. The unification applies for n…