Effect of delocalization on one-dimensional spin dynamics

1 June 1982

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 25 (11) , 6609-6615
https://doi.org/10.1103/physrevb.25.6609

Abstract

We discuss the combined effect of spin delocalization and one-dimensional (1D) diffusion on the hyperfine-controlled nuclear relaxation and EPR linewidth. We calculate the local-spin-correlation functions in the 1D random-walk model for a particle delocalized over several sites. At low frequency the divergent diffusive contribution is independent of the delocalization; however, the delocalization introduces a negative frequency-independent contribution which is proportional to the delocalization length.

Keywords

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