2003/01/07 by Markus Popp, Diego Frustaglia, Klaus Richter · 1 citation
Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Magnetic properties of thin films #Quantum and electron transport phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1088/0957-4484/14/2/347
5 pages, 8 figures
arxiv created 2003/01/07 · openalex publication_date 2003/01/28 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study the spin-dependent conductance of ballistic mesoscopic ring systems in the presence of an inhomogeneous magnetic field. We show that, for the setup proposed, even a small Zeeman splitting can lead to a considerable spin polarisation of the current. Making use of a spin-switch effect predicted for such systems we propose a device of two rings connected in series that in principle allows for both creating and coherently controlling spin polarized currents at low temperatures.