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Origin of non-exponential relaxation in a crystalline ionic conductor: a multi-dimensional 109Ag NMR study

M. Vogel·C. Brinkmann·H. Eckert·A. Heuer
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Abstract

The origin of the non-exponential relaxation of silver ions in the crystalline ion conductor Ag7P3S11 is analyzed by comparing appropriate two-time and three-time 109Ag NMR correlation functions. The non-exponentiality is due to a rate distribution, i.e., dynamic heterogeneities, rather than to an intrinsic non-exponentiality. Thus, the data give no evidence for the relevance of correlated back-and-forth jumps on the timescale of the silver relaxation.

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M. Vogel, C. Brinkmann, H. Eckert, A. Heuer. 2003-10-10. Origin of non-exponential relaxation in a crystalline ionic conductor: a multi-dimensional 109Ag NMR study. https://doi.org/10.1103/physrevb.69.094302

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