Abstract
We report the observation of a highly unusual Hall current in the helical magnet MnSi in an applied pressure . The Hall conductivity displays a distinctive stepwise field profile quite unlike any other Hall response observed in solids. We identify the origin of this Hall current with the effective real-space magnetic field due to chiral spin textures, which may be a precursor of the partial-order state at . We discuss evidence favoring the chiral spin mechanism for the origin of the observed Hall anomaly.
- Received 19 November 2008
DOI:https://doi.org/10.1103/PhysRevLett.102.186601
©2009 American Physical Society
Viewpoint
A new twist in a ferromagnet
Published 4 May 2009
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