1997/01/01 by D. Ullmo, K. Richter, H. U. Baranger +5 · 2 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum many-body systems #Topological Materials and Phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1016/s1386-9477(97)00058-1
8 pages, revtex, includes 1 postscript fig
openalex publication_date 1997/01/01 · arxiv created 1997/10/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study interaction effects on the orbital magnetism of diffusive mesoscopic quantum systems. By combining many-body perturbation theory with semiclassical techniques, we show that the interaction contribution to the ensemble averaged quantum thermodynamic potential can be reduced to an essentially classical operator. We compute the magnetic response of disordered rings and dots for diffusive classical dynamics. Our semiclassical approach reproduces the results of previous diagrammatic quantum calculations.