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Comment on "Dynamical corrections to the DFT-LDA electron conductance in nanoscale systems"

Jung, J., Bokes, P. and Godby, R. W. (2007) Comment on "Dynamical corrections to the DFT-LDA electron conductance in nanoscale systems". Physical Review Letters. 259701. -. ISSN 1079-7114

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In a recent paper Sai et al. [1] identified a correction R^{dyn}$ to the DC conductance of nanoscale junctions arising from dynamical exchange-correlation (XC) effects within time-dependent density functional theory. This quantity contributes to the total resistance through $R=R_{s}+R^{dyn}$ where $R_{s}$ is the resistance evaluated in the absence of dynamical $XC$ effects. In this Comment we show that the numerical estimation of $R^{dyn}$ in example systems of the type they considered should be considerably reduced, once a more appropriate form for the shear electron viscosity ¿ is used.

Item Type: Article
Copyright, Publisher and Additional Information: © 2007 American Physical Society. Paper published in Physical Review Letters and uploaded in accordance with the publisher's self archiving policy. NB uploaded to arXiv as: "Treatment of electron viscosity in quantum conductance" arXiv:0706.0140v1 [cond-mat.mtrl-sci]
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: Physics Import
Date Deposited: 14 Aug 2008 14:47
Last Modified: 19 May 2016 22:49
Published Version: http://dx.doi.org/10.1103/PhysRevLett.98.259701
Status: Published
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/4033

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