| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1544041 | Physica E: Low-dimensional Systems and Nanostructures | 2015 | 6 Pages |
Abstract
The persistent current in the ground state of a quantum ring threaded by a magnetic flux is calculated within the framework of the Holstein-Hubbard model. It is found that the persistent current is suppressed by both the electron-electron and electron-phonon interactions. Calculation of Drude weight reveals that the persistent current is diamagnetic in nature. It is observed that as the number of atoms in the quantum ring increases, the persistent current decays in a continuous way. It is finally predicted that there exists an intervening metallic phase flanked in real time by two insulating phases, the SDW phase and the CDW phase.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
I.V. Sankar, P J Monisha, Shreekantha Sil, Ashok Chatterjee,