Phys. Rev. Lett. 66, 52–55 (1991)Non-Debye relaxation in structurally disordered ionic conductors: Effect of Coulomb interactionReceived 27 August 1990; published in the issue dated 7 January 1991 We perform Monte Carlo simulations for diffusion of charged particles in structurally disorderd lattices. As a consequence of the Coulomb interaction, pronounced backward correlations occur which lead to power-law behavior of the relevant transport quantities at intermediate time and frequency scales. Both the exponents and the size of the dispersive regime depend on temperature. Our simulations suggest that the combined effect of disorder and Coulomb interaction provides a new mechanism for understanding non-Debye relaxation, which is experimentally known for a wide class of materials. © 1991 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.66.52
DOI:
10.1103/PhysRevLett.66.52
PACS:
66.30.Dn, 77.40.+i
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