The measurement by scattering of the chiral order-parameter of spins in a crystal
arXiv:0909.2483
Abstract
A chiral-order parameter of spins in a crystal can not be inferred from measurements of Bragg reflections, although there are several claims in published literature to the contrary. Appropriate techniques use total scattering, of x-rays or neutrons, that yield the instantaneous value of a spin correlation related to an established measure of spin chirality.