Cargando…

The J-triplet Cooper pairing with magnetic dipolar interactions

Recently, cold atomic Fermi gases with the large magnetic dipolar interaction have been laser cooled down to quantum degeneracy. Different from electric-dipoles which are classic vectors, atomic magnetic dipoles are quantum-mechanical matrix operators proportional to the hyperfine-spin of atoms, thu...

Descripción completa

Detalles Bibliográficos
Autores principales: Li, Yi, Wu, Congjun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3340607/
https://www.ncbi.nlm.nih.gov/pubmed/22550567
http://dx.doi.org/10.1038/srep00392
_version_ 1782231476501217280
author Li, Yi
Wu, Congjun
author_facet Li, Yi
Wu, Congjun
author_sort Li, Yi
collection PubMed
description Recently, cold atomic Fermi gases with the large magnetic dipolar interaction have been laser cooled down to quantum degeneracy. Different from electric-dipoles which are classic vectors, atomic magnetic dipoles are quantum-mechanical matrix operators proportional to the hyperfine-spin of atoms, thus provide rich opportunities to investigate exotic many-body physics. Furthermore, unlike anisotropic electric dipolar gases, unpolarized magnetic dipolar systems are isotropic under simultaneous spin-orbit rotation. These features give rise to a robust mechanism for a novel pairing symmetry: orbital p-wave (L = 1) spin triplet (S = 1) pairing with total angular momentum of the Cooper pair J = 1. This pairing is markedly different from both the (3)He-B phase in which J = 0 and the (3)He-A phase in which J is not conserved. It is also different from the p-wave pairing in the single-component electric dipolar systems in which the spin degree of freedom is frozen.
format Online
Article
Text
id pubmed-3340607
institution National Center for Biotechnology Information
language English
publishDate 2012
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-33406072012-05-01 The J-triplet Cooper pairing with magnetic dipolar interactions Li, Yi Wu, Congjun Sci Rep Article Recently, cold atomic Fermi gases with the large magnetic dipolar interaction have been laser cooled down to quantum degeneracy. Different from electric-dipoles which are classic vectors, atomic magnetic dipoles are quantum-mechanical matrix operators proportional to the hyperfine-spin of atoms, thus provide rich opportunities to investigate exotic many-body physics. Furthermore, unlike anisotropic electric dipolar gases, unpolarized magnetic dipolar systems are isotropic under simultaneous spin-orbit rotation. These features give rise to a robust mechanism for a novel pairing symmetry: orbital p-wave (L = 1) spin triplet (S = 1) pairing with total angular momentum of the Cooper pair J = 1. This pairing is markedly different from both the (3)He-B phase in which J = 0 and the (3)He-A phase in which J is not conserved. It is also different from the p-wave pairing in the single-component electric dipolar systems in which the spin degree of freedom is frozen. Nature Publishing Group 2012-05-01 /pmc/articles/PMC3340607/ /pubmed/22550567 http://dx.doi.org/10.1038/srep00392 Text en Copyright © 2012, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareALike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
spellingShingle Article
Li, Yi
Wu, Congjun
The J-triplet Cooper pairing with magnetic dipolar interactions
title The J-triplet Cooper pairing with magnetic dipolar interactions
title_full The J-triplet Cooper pairing with magnetic dipolar interactions
title_fullStr The J-triplet Cooper pairing with magnetic dipolar interactions
title_full_unstemmed The J-triplet Cooper pairing with magnetic dipolar interactions
title_short The J-triplet Cooper pairing with magnetic dipolar interactions
title_sort j-triplet cooper pairing with magnetic dipolar interactions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3340607/
https://www.ncbi.nlm.nih.gov/pubmed/22550567
http://dx.doi.org/10.1038/srep00392
work_keys_str_mv AT liyi thejtripletcooperpairingwithmagneticdipolarinteractions
AT wucongjun thejtripletcooperpairingwithmagneticdipolarinteractions
AT liyi jtripletcooperpairingwithmagneticdipolarinteractions
AT wucongjun jtripletcooperpairingwithmagneticdipolarinteractions