Bokes, P., Jung, J. and Godby, R. W. (2007) Ab initio formulation of the four-point conductance of interacting electronic systems. Physical Review B (PRB). -. ISSN 1098-0121
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Abstract
We derive an expression for the four-point conductance of a general quantum junction in terms of the density response function. Our formulation allows us to show that the four-point conductance of an interacting electronic system possessing either a geometrical constriction and/or an opaque barrier becomes identical to the macroscopically measurable two-point conductance. Within time-dependent density-functional theory the formulation leads to a direct identification of the functional form of the exchange-correlation kernel that is important for the conductance. We demonstrate the practical implementation of our formula for a metal-vacuum-metal interface.
| Item Type: | Article |
|---|---|
| Copyright, Publisher and Additional Information: | © 2007 American Physical Society. This is an author produced version of a paper published in Physical Review B. Uploaded in accordance with the publisher's self archiving policy. |
| Keywords: | DENSITY-FUNCTIONAL THEORY, LANDAUER FORMULA, LINEAR-RESPONSE, TRANSPORT |
| Academic Units: | The University of York > Physics (York) |
| Depositing User: | Physics Import |
| Date Deposited: | 19 Aug 2008 08:48 |
| Last Modified: | 19 Feb 2013 11:33 |
| Published Version: | http://dx.doi.org/10.1103/PhysRevB.76.125433 |
| Status: | Published |
| Refereed: | Yes |
| Related URLs: | |
| URI: | http://eprints.whiterose.ac.uk/id/eprint/4032 |
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