Continuum theory of vacancy-mediated diffusion

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Continuum theory of vacancy-mediated diffusion

We present and solve a continuum theory of vacancy-mediated diffusion (as evidenced, for example, in the vacancy driven motion of tracers in crystals). Results are obtained for all spatial dimensions, and reveal the strongly nongaussian nature of the tracer fluctuations. In integer dimensions, our results are in complete agreement with those from previous exact lattice calculations. We also ext...

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ژورنال

عنوان ژورنال: Physical Review B

سال: 1999

ISSN: 0163-1829,1095-3795

DOI: 10.1103/physrevb.59.13754