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|Type:||Artigo de periódico|
|Title:||Eu2+ spin dynamics in the filled skutterudites EuM4Sb12 (M = Fe, Ru, Os)|
|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.|
|Editor:||Amer Physical Soc|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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