Local Fields at 2 Muon Sites in Helimagnetic MnSi

Below Tc = 29.5K, MnSi orders magnetically into a rather exotic structure: the magnitude of the local magnetization is constant but its direction is a function of position: there is a constant axial component and a transverse component that spirals about that axis with a long (compared to the lattice spacing) wavelength. Fortunately, µSR can measure the magnitude of the local field regardless of its direction.

There are two muon sites in this crystal, presumably crystallographically equivalent but with different local magnetic fields in the ordered phase.




Author: JHB.    
Prepared by Jess H. Brewer
Last modified: Thu Aug 13 16:02:43 PDT 1998