High field phase diagram of the heavy-fermion metal CeIn; A Pulsed magnetic field NMR study

Tokunaga, Yo  

CeIn exhibits a field-induced anomaly in the Fermi surface at about 45 T. In order to investigate the origin of this anomaly, a pulsed magnetic field NMR experiment has been performed using a high quality singe crystal. We confirmed that there is no obvious change in the hyperfine fields and electric field gradient at In sites through 45 T. This excludes a simple explanation of the anomaly as due to field-induced change of magnetic structure above 45 T.