Spin-lattice relaxation: Non-Bloembergen-Purcell-Pound behavior by structural disorder and Coulomb interactions

Martin Meyer, Philipp Maass, and Armin Bunde
Phys. Rev. Lett. 71, 573 – Published 26 July 1993
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Abstract

We study, by Monte Carlo simulation, the spin lattice relaxation rate 1/T1(ω,T) caused by diffusing ions in disordered structures. We show that both disorder and Coulomb interactions are essential to obtain the typical non-Bloembergen-Purcell-Pound behavior of 1/T1. The dependence of 1/T1 upon frequency ω and temperature T can be described by the simple scaling form 1/T1=ω1f(ωτ). We find that the NMR correlation time τ is more highly activated than the conductivity relaxation time τσ, which is in agreement with very recent experimental results.

  • Received 9 April 1993

DOI:https://doi.org/10.1103/PhysRevLett.71.573

©1993 American Physical Society

Authors & Affiliations

Martin Meyer, Philipp Maass, and Armin Bunde

  • I. Institut für Theoretische Physik, Universität Hamburg, Jungiusstrasse 9, D-2000 Hamburg 36, Germany

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Issue

Vol. 71, Iss. 4 — 26 July 1993

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