M. Pinkpank et al., CAN ONE OBSERVE BY MU-SR THE TRANSITION FROM UNCORRELATED TO CORRELATED SPIN FLUCTUATIONS - EXAMPLE - ND1.4CE0.2SR0.4CUO4-DELTA, Hyperfine interactions, 105(1-4), 1997, pp. 145-149
mu SR-measurements in ZF and LF on Nd1.4Ce0.2Sr0.4CuO4-delta show a sh
arp increase of the depolarisation rate (lambda) below approximate to
2 K. This increase can be explained by the transition from uncorrelate
d to correlated spin fluctuations, which is in agreement with results
obtained by neutron scattering.