Multi-mode transport through a quantum nanowire with two embedded dots

2004/11/15 by Vidar Gudmundsson, Gudny Gudmundsdottir, Jens Hjorleifur Bardarson +3
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall

paper · pdf · doi:10.1140/epjb/e2005-00191-6

published as European Physical Journal B 45, 339 (2005) · RevTeX, 7 pages with included postscript figures

arxiv created 2004/11/15 · openalex publication_date 2005/06/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We investigate the conductance of a quantum wire with two embedded quantum dots using a T-matrix approach based on the Lippmann-Schwinger formalism. The quantum dots are represented by a quantum well with Gaussian shape and the wire is two-dimensional with parabolic confinement in the transverse direction. In a broad wire the transport can assume a strong nonadiabatic character and the conductance manifests effects caused by intertwined inter- and intra-dot processes that are identified by analysis of the ``nearfield'' probability distribution of the transported electrons.

Citations

• Time-dependent transport in interacting and non-interacting mesoscopic systems
• Coherent electronic transport in a multimode quantum channel with Gaussian-type scatterers

Related

• Coherent electronic transport in a multimode quantum channel with Gaussian-type scatterers
• S-matrix theory of single-channel ballistic transport through coupled quantum dots
• Finite band effects over the linear conductance through a quantum wire coupled with a quantum dot: X-boson treatment
• Effect of a Variable-Spin Quantum Dot on a Wire Conductance
• Transport through a quantum ring, a dot and a barrier embedded in a nanowire in magnetic field