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Type: Artigo de periódico
Title: Eu2+ Spin Dynamics In The Filled Skutterudites Eum 4sb12 (m=fe, Ru, Os)
Author: Garcia F.A.
Adriano C.
Cabrera G.G.
Holanda L.M.
Pagliuso P.G.
Avila M.A.
Oseroff S.B.
Rettori C.
Abstract: We report evidence for a close relation between the thermal activation of the rattling motion of the filler guest atoms and inhomogeneous spin dynamics of the Eu2+ spins. The spin dynamics is probed directly by means of Eu2+ electron spin resonance (ESR), performed in both X-band (?9.4 GHz) and Q-band (?34 GHz) frequencies in the temperature interval 4.2K?T?300 K. A comparative study with ESR measurements on the β-Eu8Ga 16Ge30 clathrate compound is presented. Our results point to a correlation between the rattling motion and the spin dynamics which may be relevant for the general understanding of the dynamics of cage systems. © 2011 American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.84.014420
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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