2008/06/17 by Orsolya Kálmán, Orsolya Kalman, Peter Foldi +5 · 1 citation
Engineering · Mathematics · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Condensed matter physics #Conductance #Electron #Function (biology) #Geometry #Magnetic field #Magnetic flux #Mathematics #Perpendicular #Physics #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Reflection (computer programming) #Scattering #Semiconductor Quantum Structures and Devices #Spin (aerodynamics) #Wave function #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.78.125306
10 pages, 10 figures, submitted to PRB
arxiv created 2008/06/17 · openalex publication_date 2008/09/04 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Electron transport through multiterminal rectangular arrays of quantum rings is studied in the presence of Rashba-type spin-orbit interaction (SOI) and of a perpendicular magnetic field. Using the analytic expressions for the transmission and reflection coefficients for single rings we obtain the conductance through such arrays as a function of the SOI strength, of the magnetic flux, and of the wave vector k of the incident electron. Due to destructive or constructive spin interferences caused by the SOI, the array can be totally opaque for certain ranges of k, while there are parameter values where it is completely transparent. Spin resolved transmission probabilities show nontrivial spin transformations at the outputs of the arrays. When pointlike random scattering centers are placed between the rings, the Aharonov-Bohm peaks split, and an oscillatory behavior of the conductance emerges as a function of the SOI strength.