Persistent current in a correlated quantum ring with electron-phonon interaction in the presence of Rashba interaction and Aharonov-Bohm flux

Persistent current in a correlated quantum ring threaded by an Aharonov-Bohm flux is studied in the presence of electron-phonon interactions and Rashba spin-orbit coupling. The quantum ring is modeled by the Holstein-Hubbard-Rashba Hamiltonian and the energy is calculated by performing the conventio...

Descripción completa

Detalles Bibliográficos
Autores principales: Monisha, P. J., Sankar, I. V., Sil, Shreekantha, Chatterjee, Ashok
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4735522/
https://www.ncbi.nlm.nih.gov/pubmed/26831831
http://dx.doi.org/10.1038/srep20056
_version_ 1782413093269143552
author Monisha, P. J.
Sankar, I. V.
Sil, Shreekantha
Chatterjee, Ashok
author_facet Monisha, P. J.
Sankar, I. V.
Sil, Shreekantha
Chatterjee, Ashok
author_sort Monisha, P. J.
collection PubMed
description Persistent current in a correlated quantum ring threaded by an Aharonov-Bohm flux is studied in the presence of electron-phonon interactions and Rashba spin-orbit coupling. The quantum ring is modeled by the Holstein-Hubbard-Rashba Hamiltonian and the energy is calculated by performing the conventional Lang-Firsov transformation followed by the diagonalization of the effective Hamiltonian within a mean-field approximation. The effects of Aharonov-Bohm flux, temperature, spin-orbit and electron-phonon interactions on the persistent current are investigated. It is shown that the electron-phonon interactions reduce the persistent current, while the Rashba coupling enhances it. It is also shown that temperature smoothens the persistent current curve. The effect of chemical potential on the persistent current is also studied.
format Online
Article
Text
id pubmed-4735522
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-47355222016-02-05 Persistent current in a correlated quantum ring with electron-phonon interaction in the presence of Rashba interaction and Aharonov-Bohm flux Monisha, P. J. Sankar, I. V. Sil, Shreekantha Chatterjee, Ashok Sci Rep Article Persistent current in a correlated quantum ring threaded by an Aharonov-Bohm flux is studied in the presence of electron-phonon interactions and Rashba spin-orbit coupling. The quantum ring is modeled by the Holstein-Hubbard-Rashba Hamiltonian and the energy is calculated by performing the conventional Lang-Firsov transformation followed by the diagonalization of the effective Hamiltonian within a mean-field approximation. The effects of Aharonov-Bohm flux, temperature, spin-orbit and electron-phonon interactions on the persistent current are investigated. It is shown that the electron-phonon interactions reduce the persistent current, while the Rashba coupling enhances it. It is also shown that temperature smoothens the persistent current curve. The effect of chemical potential on the persistent current is also studied. Nature Publishing Group 2016-02-01 /pmc/articles/PMC4735522/ /pubmed/26831831 http://dx.doi.org/10.1038/srep20056 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Monisha, P. J.
Sankar, I. V.
Sil, Shreekantha
Chatterjee, Ashok
Persistent current in a correlated quantum ring with electron-phonon interaction in the presence of Rashba interaction and Aharonov-Bohm flux
title Persistent current in a correlated quantum ring with electron-phonon interaction in the presence of Rashba interaction and Aharonov-Bohm flux
title_full Persistent current in a correlated quantum ring with electron-phonon interaction in the presence of Rashba interaction and Aharonov-Bohm flux
title_fullStr Persistent current in a correlated quantum ring with electron-phonon interaction in the presence of Rashba interaction and Aharonov-Bohm flux
title_full_unstemmed Persistent current in a correlated quantum ring with electron-phonon interaction in the presence of Rashba interaction and Aharonov-Bohm flux
title_short Persistent current in a correlated quantum ring with electron-phonon interaction in the presence of Rashba interaction and Aharonov-Bohm flux
title_sort persistent current in a correlated quantum ring with electron-phonon interaction in the presence of rashba interaction and aharonov-bohm flux
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4735522/
https://www.ncbi.nlm.nih.gov/pubmed/26831831
http://dx.doi.org/10.1038/srep20056
work_keys_str_mv AT monishapj persistentcurrentinacorrelatedquantumringwithelectronphononinteractioninthepresenceofrashbainteractionandaharonovbohmflux
AT sankariv persistentcurrentinacorrelatedquantumringwithelectronphononinteractioninthepresenceofrashbainteractionandaharonovbohmflux
AT silshreekantha persistentcurrentinacorrelatedquantumringwithelectronphononinteractioninthepresenceofrashbainteractionandaharonovbohmflux
AT chatterjeeashok persistentcurrentinacorrelatedquantumringwithelectronphononinteractioninthepresenceofrashbainteractionandaharonovbohmflux

Ejemplares similares