We report on the real-space observation of a type of spin texture, i.e., the Swiss-roll-like vortex, in cubic helimagnet (B20 -type) FeGe in terms of the Lorentz electron microcopy. This structure is enabled by the weak spin anisotropy in FeGe and the two-dimensional confinement, as revealed by a theoretical analysis that takes into account the Berry phase associated with the curved spin stripes, i.e., the change in the spiral direction.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2008 May 2|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics