title: Quantized hyperfine field at an implanted micro+ site in PrPb3: interplay between localized f electrons and an interstitial charged particle.
abstract: 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.
authors.affiliation: Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan.
authors.forename: T U
authors.initials: TU
authors.lastname: Ito
authors.forename: W
authors.initials: W
authors.lastname: Higemoto
authors.forename: K
authors.initials: K
authors.lastname: Ohishi
authors.forename: N
authors.initials: N
authors.lastname: Nishida
authors.forename: R H
authors.initials: RH
authors.lastname: Heffner
authors.forename: Y
authors.initials: Y
authors.lastname: Aoki
authors.forename: A
authors.initials: A
authors.lastname: Amato
authors.forename: T
authors.initials: T
authors.lastname: Onimaru
authors.forename: H S
authors.initials: HS
authors.lastname: Suzuki