2000/10/31 by Dmitry S. Golubev, Dmitrii S. Golubev, Andrei D. Zaikin · 2 citations
Computer Science · Engineering · Physics and Astronomy · #Action (physics) #Advancements in Semiconductor Devices and Circuit Design #Charge (physics) #Condensed matter physics #Conductance #Conductor #Coulomb #Coulomb blockade #Effective action #Electron #Instanton #Langevin equation #Physics #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum mechanics #Scattering #Voltage #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.86.4887
4 pages, no figures
arxiv created 2000/10/31 · openalex publication_date 2001/05/21 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
An interplay between charge discreteness, coherent scattering, and Coulomb interaction yields nontrivial effects in quantum transport. We derive a real-time effective action and an equivalent quantum Langevin equation for an arbitrary coherent scatterer and evaluate its current-voltage characteristics in the presence of interactions. Within our model, at large conductances G0 and low T (but outside the instanton-dominated regime), the interaction correction to G0 saturates and causes conductance suppression by a universal factor which depends only on the type of the conductor.