Landauer Conductance without Two Chemical Potentials

Details Landauer Conductance without Two Chemical Potentials Landauer Conductance without Two Chemical Potentials

2001-03-23

arxiv.org/abs/cond-mat/0103488v1

PRB 63, 155304 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages

Scientific paper

10.1103/PhysRevB.63.155304

We present a theory of the four--terminal conductance for the multi-channel tunneling barrier, which is based on the self-consistent solution of Shrodinger, Poisson and continuity equations. We derive new results for the case of a barrier embedded in a long wire with and without disorder. We also recover known expressions for the conductance of the barrier placed into a ballistic constriction. Our approach avoids a problematic use of two chemical potentials in the same system.

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