MINIMA OF THE MUON DEPOLARIZATION RATE IN CD1-XMNXTE

Muon-spin rotation experiments were carried out on Cd1-xMnxTe samples with different Mn concentrations x and different annealing treatments (in Cd vapor or in vacuum). The purpose of the experiment was to eluci date the origin of the pronounced minima in the temperature dependence of the muon depolarization rate. We found that the data can be analyz ed in a two-state model with the assumption that the muon has a high ( 10-30 mu s(-1)) depolarization rate in state one and a low (0.1-0.3 mu s(-1)) depolarization rate in state two. The minima are attributed to a change from state one (presumably a paramagnetic center) to state t wo (presumably a diamagnetic center). The state change is either purel y electronic or caused by a site change of the muon.