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.

arXiv comment9 pages, 8 figures

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• Persistent charge and spin currents in a quantum ring using Green's function technique: Interplay between magnetic flux and spin-orbit interactions
• Magnetic Response in a Zigzag Carbon Nanotube
• Unconventional localization phenomena in a spatially non-uniform disordered material
• Magneto-transport in a quantum network: Evidence of a mesoscopic switch
• Conformation dependent magnetotransport in a single handed helical geometry
• Exact and mean-field analysis of the role of Hubbard interactions on flux driven circular current in a quantum ring