Quantized hyperfine field at an implanted site in PrPb; Interplay between localized electrons and an interstitial charged particle

Ito, Takashi ; Higemoto, Wataru ; Oishi, Kazuki*; Nishida, Nobuhiko*; Heffner, R. H.; Aoki, Yuji*; Amato, A.*; Onimaru, Takahiro*; Suzuki, Hiroyuki*

The local effect of an interstitial hydrogenlike particle on localized electrons was studied in PrPb by means of spin rotation and relaxation. Spontaneous spin precession with harmonic frequencies was observed for the first time in electron compounds. We demonstrate that the signal is derived from a coupling between the spin and the hyperfine-enhanced nuclear spin of nearest neighbor (NN) $^{141}$ Pr with Ising-like anisotropy. The signal also suggests a marked suppression of spin dynamics of the NN $^{141}$ Pr in comparison with that of the bulk $^{141}$ Pr. These facts strongly indicate modification of the electronic state due to the interstitial charged particle.

Language	:	English
Journal	:	Physical Review Letters
Volume	:	102
Number	:	9
Pages	:	p.096403_1 - 096403_4
Publication Year/Month	:	2009/03
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Paper URL	:	https://doi.org/10.1103/PhysRevLett.102.096403
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Article of JAEA R&D Review	:	Probing Interstitial Hydrogen States Using Positive Muons; For Detailed Understanding of Rare-Earth-Based Hydrogen-Absorbing Alloys[/]
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Registration No. : AA20081016
JAEA Abstracts No. : 37000880
Paper Submission No. : 5904

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