2003/05/09 by M. Stopa, Wilfred G. van der Wiel, W. G. van der Wiel +5 · 1 citation
Engineering · Physics and Astronomy · #Condensed matter physics #Conductance #Coupling (piping) #Electron #Function (biology) #Kondo effect #Magnetic field #Materials science #Physics #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Semiconductor Quantum Structures and Devices #Semiconductor materials and devices #Spin (aerodynamics) #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.91.046601
4 pages, 3 color figures
arxiv created 2003/05/09 · openalex publication_date 2003/07/24 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We quantitatively describe the main features of the magnetically induced conductance modulation of a Kondo quantum dot-or chessboard pattern-in terms of a constant-interaction double quantum dot model. We show that the analogy with a double dot holds down to remarkably low magnetic fields. The analysis is extended by full 3D spin density functional calculations. Introducing an effective Kondo coupling parameter, the chessboard pattern is self-consistently computed as a function of magnetic field and electron number, which enables us to explain our experimental data quantitatively.