Physics Colloquium

Field-Tunable Toroidal Moment in Chiral-Lattice Magnet

Presented by Huibo Cao of Oak Ridge National Laboratory

Abstract

As one of very few macroscopic manifestations of quantum coherence, magnetic order is at the crux of condensed matter physics. Assisted with neutrons, magnetism beyond ferromagnetism such as antiferro- ferri- and non-collinear magnetic order was integrated in our knowledge only in the last decades. Nowadays, our interest has been moved to topologically nontrivial magnetism and magnetically coupled multiferroic systems. Here I will introduce our recent observation using neutrons of a field-tunable toroidal moment in a chiral-lattice magnet.