Abstract
Zero-field muon spin relaxation and resistivity experiments on Mn powder show that the sublattice magnetization is well described for by , where , characteristic of a second-order phase transition for a 3D spin system, and the ferromagnetic transition temperature ( K) and resistivity peak temperature coincide to within 1 K. Below and the zero-field resistivity are correlated, with . Unusual relaxational dynamics suggest spatially inhomogeneous Mn-ion correlation times. These results are discussed in terms of the possible effects of polarons on the spin and charge dynamics.
- Received 6 March 1996
DOI:https://doi.org/10.1103/PhysRevLett.77.1869
©1996 American Physical Society