Abstract
The electric quadrupole interaction of 55 Mn nuclei was studied in the weak ferromagnetic system MnSi using muon level-crossing resonance (μLCR). The temperature dependence of the electric-field gradient (EFG) shows a critical behavior near the ferromagnetic transition temperature, indicating that the EFG due to conduction electrons is strongly correlated with the magnetic susceptibility in this itinerant electron helimagnet. Using this μLCR result, the previous data were reanalyzed to obtain a more accurate spin-lattice relaxation time for both muons (T 1 μ ) and 55 Mn nuclei (T 1 Mn ). The temperature dependences of the EFG, T 1 Mn , and T 1 μ are in reasonable agreement with the self-consistent renormalization theory developed by Moriya and co-workers
Published Version
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