Properties of Metallic Helimagnets
Speaker: Dr. Stephen Ho, University of Maryland
Series: Topical Seminars
Date/Time: Thursday, February 2, 2012, 3:00 p.m. - 4:00 p.m.
Helimagnets are materials that exhibit helical order at low temperatures. They exhibit ferromagnetic order on planes, but the direction of the order rotates along the helix. They generally have richer phase diagrams than other magnets. Their fluctuations are huge, leading to transport properties that are different from Fermi liquids. Moreover, there is an exotic A phase, which is believed to be a two-dimensional lattice of Skyrmions. The size of Skyrmions as topological excitations in various phases and the core-to-core distance of the Skyrmion lattice are the result of the competition of various physical length scales in the material.