Disorder-induced enhancement of the persistent current for strongly interacting electrons in one-dimensional rings

Abstract

We show that disorder increases the persistent current of a half-filled one-dimensional Hubbard-Anderson ring at strong interaction. This unexpected effect results from a perturbative expansion starting from the strongly interacting Mott insulator ground state. The analytical result is confirmed and extended by numerical calculations.

7 pages, 2 figures, LaTeX, using epl.cls (included), considerably revised final version

References in corpus (2)

• Conductance anomalies in a one-dimensional quantum contact
• Particle-Hole Symmetry and the Effect of Disorder on the Mott-Hubbard Insulator

Cited by in corpus (13)

• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Routes towards Anderson-Like localization of Bose-Einstein condensates in disordered optical lattices
• Atomic Fermi-Bose mixtures in inhomogeneous and random lattices: From Fermi glass to quantum spin glass and quantum percolation
• Disordered ultracold atomic gases in optical lattices: A case study of Fermi-Bose mixtures
• Novel interaction induced oscillations in correlated electron transport
• Anomalous magnetic response of a quasi-periodic mesoscopic ring in presence of Rashba and Dresselhaus spin-orbit interactions
• Effect of electronic interactions on the persistent current in one-dimensional disordered rings
• Persistent charge and spin currents in a quantum ring using Green's function technique: Interplay between magnetic flux and spin-orbit interactions
• Pair formation in two electron correlated chains
• Strongly correlated Fermi-Bose mixtures in disordered optical lattices
• The large system asymptotics of persistent currents in mesoscopic quantum rings
• Delocalization due to correlations in two-dimensional disordered systems
• Conformation dependent magnetotransport in a single handed helical geometry