Phys. Rev. Lett. 102, 096403 (2009) [4 pages]Quantized Hyperfine Field at an Implanted μ+ Site in PrPb3: Interplay between Localized f Electrons and an Interstitial Charged ParticleReceived 28 October 2008; published 3 March 2009 The local effect of an interstitial hydrogenlike particle on localized f electrons was studied in PrPb3 by means of μ+ spin rotation and relaxation. Spontaneous μ+ 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 μ+ 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.096403
DOI:
10.1103/PhysRevLett.102.096403
PACS:
71.70.Ch, 76.75.+i
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