Physics – Condensed Matter
Scientific paper
2001-05-18
Physics Letters A, (2001) 291, 46
Physics
Condensed Matter
Scientific paper
10.1016/S0375-9601(01)00701-0
A formulation for transport in an inhomogeneous, interacting electron gas is described. Electronic current is induced by a constraint condition imposed as a vector Lagrange multiplier. Constrained minimization of the total energy functional on the manifold of an arbitrary constant current leads to a many-electron Schroedinger equation with a complex, momentum-dependent potential. Constant current Hartree-Fock and Kohn-Sham approximations are formulated within the method and application to transport for quantum wires is developed. No appeal is made to near equilibrium conditions or other approximations allowing development of a general ab initio electronic transport formulation.
Greer James C.
Kosov Daniel S.
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