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). 125433. -. ISSN 1098-0121Full text available as:
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.
|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:||17 Oct 2013 14:13|