Chiral scattering in complex magnets

TL;DR

This paper explores the properties of chiral neutron scattering in complex magnets, analyzing how axial vector interactions influence magnetic structures and fluctuations, with implications for materials like MnSi and magneto-electric compounds.

Contribution

It provides a theoretical framework for understanding chiral scattering in the presence of Zeeman and Dzyaloshinskii-Moriya interactions, including behavior under magnetic fields.

Findings

Chiral scattering behavior varies with magnetic field and interactions.

Dzyaloshinskii-Moriya interactions lead to incommensurate fluctuations above transition temperature.

Magnetic field influences the dynamical chiral fluctuations in magnetic materials.

Abstract

General properties of the chiral scattering of polarized neutrons are considered for two possible axial vector interactions: Zeeman energy and non-alternating Dzyaloshinskii-Moriya interaction. Behavior in magnetic field of helical magnetic structures is discussed for $Mn Si$ and magneto-electric materials. The dynamical chiral fluctuations in magnetic field are considered briefly. The chiral fluctuations in materials with the Dzyaloshinskii-Moriya interaction are discussed and an assumption is made that above the transition temperature they have to be incommensurate.