2003/05/15 by Damir Herman, Harsh Mathur, Ganpathy Murthy · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum and electron transport phenomena #Quantum chaos and dynamical systems #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.69.041301
4 pages, three eps figures
arxiv created 2003/05/15 · openalex publication_date 2004/01/12 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Recently, new strongly interacting phases have been uncovered in mesoscopic systems with chaotic scattering at the boundaries. The new phases are the mesoscopic analogue of spontaneous distortions of the Fermi surface induced by interactions in bulk systems and can occur in any Fermi-liquid channel with angular momentum m. Here we show that the phase with m even has a diamagnetic persistent current (seen experimentally but mysterious theoretically), while that with m odd can be driven through a transition which spontaneously breaks time-reversal symmetry by increasing the coupling to dissipative leads. Our analysis is reliable when the dimensionless conductance of the system is large, is nonperturbative in both disorder and interactions, and applies to ballistic structures with strong interactions.