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ZhETF, Vol. 145, No. 5, p. 866 (May 2014)
(English translation - JETP, Vol. 118, No. 5, p. 760, May 2014 available online at www.springer.com )

EVOLUTION OF THE 4f ELECTRON LOCALIZATION FROM YbRh2 Si2 to YbRh2 Pb STUDIED BY ELECTRON SPIN RESONANCE
Ivanshin V.A., Litvinova T.O., Ivanshin N.A., Poppl A., Sokolov D.A., Aronson M.C.

Received: November 4, 2013

DOI: 10.7868/S0044451014050097

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We report electron spin resonance (ESR) experiments on the Heusler alloy YbRh2 Pb and compare its spin dynamics with that of several other Yb-based intermetallics. A detailed analysis of the derived ESR parameters indicates the extremely weak hybridization, more localized distribution of the 4f states, and a smaller RKKY interaction in YbRh2 Pb. These findings reveal the important interplay between hybridization effects, chemical substitution, and crystalline electric field interactions that determines the ground state properties of strongly correlated electron systems.

 
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