Quantized hyperfine field at an implanted micro+ site in PrPb3: interplay between localized f electrons and an interstitial charged particle.
The local effect of an interstitial hydrogenlike particle on localized f electrons was studied in PrPb3 by means of micro+ spin rotation and relaxation. Spontaneous micro+ spin precession with harmonic frequencies was observed for the first time in f electron compounds. We demonstrate that the signal is derived from a coupling between the micro+ spin and the hyperfine-enhanced nuclear spin of nearest neighbor (NN) 141Pr with Ising-like anisotropy. The signal also suggests a marked suppression of spin dynamics of the NN 141Pr in comparison with that of the bulk 141Pr. These facts strongly indicate modification of the f electronic state due to the interstitial charged particle.
Ito
T U
TU
Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan.
Higemoto
W
W
Ohishi
K
K
Nishida
N
N
Heffner
R H
RH
Aoki
Y
Y
Amato
A
A
Onimaru
T
T
Suzuki
H S
HS