Suppression of Spin Fluctuations in UAl2in High Magentic Fields

Abstract
Magnetization and magnetoresistivity measurements near 4.2 K on UAl2 in fields up to 35 and 25 T, respectively, show a suppression of spin fluctuations in this material between 15 and 20 T. The experiments strongly suggest that the field and temperature effects on the paramagnon contributions are closely related. The validity of various theoretical models on the suppression of paramagnon effects are also discussed in light of these measurements.