On the way to meet the experimental observation of persistent current in a mesoscopic cylinder: A mean field study

Abstract

The behavior of persistent current in a mesoscopic cylinder threaded by an Aharonov-Bohm flux $\varphi$ is carefully investigated within a Hartree-Fock mean field approach. We examine the combined effect of second-neighbor hopping integral and Hubbard correlation on the enhancement of persistent current in presence of disorder. A significant change in current amplitude is observed compared to the traditional nearest-neighbor hopping model and the current amplitude becomes quite comparable to experimental realizations. Our analysis is found to exhibit several interesting results which have so far remained unaddressed.

9 pages, 8 figures

References in corpus (4)

• Persistent currents in normal metal rings
• Enhancement of persistent current in mesoscopic rings $&$ cylinders : shortest $&$ next possible shortest higher order hopping
• Control of the persistent currents in two interacting quantum rings through the Coulomb interaction and inter-ring tunneling
• Microscopic model for multiple flux transitions in mesoscopic superconducting loops

Cited by in corpus (4)

• Externally controlled local magnetic field in a conducting mesoscopic ring coupled to a quantum wire
• Curvature effect on spin polarization in a three-terminal geometry in presence of Rashba spin-orbit interaction
• Mobility edge phenomenon in a Hubbard chain: A mean field study
• Exact and mean-field analysis of the role of Hubbard interactions on flux driven circular current in a quantum ring