Extended Skyrmion phase in epitaxial FeGe(111) thin films

Phys Rev Lett. 2012 Jun 29;108(26):267201. doi: 10.1103/PhysRevLett.108.267201. Epub 2012 Jun 26.

Abstract

The Skyrmion state in epitaxial B20 FeGe(111) thin films, determined by the topological Hall effect, is greatly extended in the phase diagram to cover all temperatures up to the Curie temperature T(C)≈271 K and over a wide magnetic field range that includes a zero magnetic field. The properties of the Skyrmion phase can be controlled and manipulated by the film thickness, which has a strong effect on the stabilization of Skyrmions.