Landauer formula for the current through an interacting electron region

1992/04/20 by Yigal Meir, Ned S. Wingreen · 3,003 citations
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Condensed matter physics #Conductance #Current (fluid) #Electron #Formalism (music) #Kondo effect #Molecular Junctions and Nanostructures #Non-equilibrium thermodynamics #Physics #Quantum #Quantum Hall effect #Quantum and electron transport phenomena #Quantum dot #Quantum electrodynamics #Quantum mechanics #Quantum tunnelling #Quantum wire

paper · doi:10.1103/physrevlett.68.2512

published in Physical Review Letters 68(16), 2512-2515 (American Physical Society)

openalex publication_date 1992/04/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

A Landauer formula for the current through a region of interacting electrons is derived using the nonequilibrium Keldysh formalism. The case of proportionate coupling to the left and right leads, where the formula takes an especially simple form, is studied in more detail. Two particular examples where interactions give rise to novel effects in the current are discussed: In the Kondo regime, an enhanced conductance is predicted, while a suppressed conductance is predicted for tunneling through a quantum dot in the fractional quantum Hall regime.

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