Direct observation of anapoles by neutron diffraction
Materials Science
2019-02-06 v1 Strongly Correlated Electrons
Abstract
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-magnetization ferromagnet Sm0.976Gd0.024Al2 with a diamond-type structure presents Dirac multipoles at basis-forbidden reflections that include the standard (2, 2, 2) reflection. Magnetic amplitudes measured at four such reflections are in full accord with a structure factor calculated from the appropriate magnetic space group.
Keywords
Cite
@article{arxiv.1811.08407,
title = {Direct observation of anapoles by neutron diffraction},
author = {S. W. Lovesey and T. Chatterji and A. Stunault and D. D. Khalyavin and G. van der Laan},
journal= {arXiv preprint arXiv:1811.08407},
year = {2019}
}
Comments
4 pages, 3 figures