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http://hdl.handle.net/11154/2750
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Title: | Mesoscopic diffusion as a non-Markov process |
Authors: | Godoy, S García-Colin, LS |
Issue Date: | 1998 |
Abstract: | We use both classical and quantum S-matrix theories to derive expressions for the ballistic diffusion current of a 1D mesoscopic crystalline solid. For both theories, we get the same local Fick's law, thus proving that local Fick's law and its associate local diffusion coefficient are incoherent results. The non-local Landauer diffusion coefficient is an incoherent result valid only for solids with a length larger than the coherence length. For solids with a length less than the coherence length. we show that quantum interference gives a new contribution for the non-local diffusion coefficient. (C) 1998 Elsevier Science B.V. All rights reserved. |
URI: | http://hdl.handle.net/11154/2750 |
ISSN: | 0378-4371 |
Appears in Collections: | Física
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