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Type: Artigo de periódico
Title: Eu2+ spin dynamics in the filled skutterudites EuM4Sb12 (M = Fe, Ru, Os)
Author: Garcia, FA
Adriano, C
Cabrera, GG
Holanda, LM
Pagliuso, PG
Avila, MA
Oseroff, SB
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 (approximate to 9.4 GHz) and Q-band (approximate to 34 GHz) frequencies in the temperature interval 4.2 K less than or similar to T less than or similar to 300 K. A comparative study with ESR measurements on the beta-Eu8Ga16Ge30 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.
Country: EUA
Editor: Amer Physical Soc
Citation: Physical Review B. Amer Physical Soc, v. 84, n. 1, 2011.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.84.014420
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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