2005/04/30 by M. M. Fogler, Michael M. Fogler, Eugene Pivovarov · 1 citation
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/18/1/l02
published as J. Phys.: Condens. Matter 18, L7-L13 (2006) · 7 pages, 2 figures. Changes in the text and figures to improve readability; added references
arxiv created 2005/10/10 · openalex publication_date 2005/12/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We present a controlled method for computing the exchange coupling in strongly correlated one-dimensional electron systems. It is based on the asymptotically exact relation between the exchange constant and the pair-correlation function of spinless electrons. Explicit results are obtained for thin quantum rings with realistic Coulomb interactions, by calculating this function via a many-body instanton approach.