2002/08/28 by M. Krawiec, Mariusz Krawiec, K. I. Wysokinski +1 · 3 citations
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Anderson impurity model #Asymmetry #Condensed matter physics #Conductance #Coupling (piping) #Function (biology) #Impurity #Kondo effect #Materials science #Non-equilibrium thermodynamics #Physics #Quantum #Quantum and electron transport phenomena #Quantum dot #Quantum electrodynamics #Quantum mechanics #Semiconductor Quantum Structures and Devices #Voltage #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.66.165408
published as Phys. Rev. B66, 165408 (2002) · 7 pages, 6 figures, Physical Review B (accepted for publication)
arxiv created 2002/08/28 · openalex publication_date 2002/10/08 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
A quantum dot asymmetrically coupled to external leads has been analyzed theoretically by means of the equation-of-motion technique and the noncrossing approximation. The system has been described by the single-impurity Anderson model. To calculate the conductance across the device the nonequilibrium Green's function technique has been used. The obtained results show the importance of the asymmetry of the coupling for the appearance of the Kondo peak at nonzero voltages and qualitatively explain recent experiments.