Spin-imbalance in a one-dimensional Fermi gas

Simple item page
dc.citation.firstpage567en_US
dc.citation.issueNumber7315en_US
dc.citation.journalTitleNatureen_US
dc.citation.lastpage569en_US
dc.citation.volumeNumber467en_US
dc.contributor.authorLiao, Yean-anen_US
dc.contributor.authorRittner, Ann Sophie C.en_US
dc.contributor.authorPaprotta, Tobiasen_US
dc.contributor.authorLi, Wenhuien_US
dc.contributor.authorPartridge, Guthrie B.en_US
dc.contributor.authorHulet, Randall G.en_US
dc.contributor.authorBaur, Stefan K.en_US
dc.contributor.authorMueller, Erich J.en_US
dc.contributor.orgRice Quantum Instituteen_US
dc.date.accessioned2015-03-30T19:07:09Zen_US
dc.date.available2015-03-30T19:07:09Zen_US
dc.date.issued2010en_US
dc.description.abstractSuperconductivity and magnetism generally do not coexist. Changing the relative number of up and down spin electrons disrupts the basic mechanism of superconductivity, where atoms of opposite momentum and spin form Cooper pairs. Nearly forty years ago Fulde and Ferrell [1] and Larkin and Ovchinnikov [2] (FFLO) proposed an exotic pairing mechanism in which magnetism is accommodated by the formation of pairs with finite momentum. Despite intense theoretical and experimental efforts, however, polarized superconductivity remains largely elusive [3]. Unlike the three-dimensional (3D) case, theories predict that in one dimension (1D) a state with FFLO correlations occupies a major part of the phase diagram [4, 5, 6, 7, 8, 9, 10, 11, 12]. Here we report experimental measurements of density profiles of a two-spin mixture of ultracold [6] Li atoms trapped in an array of 1D tubes (a system analogous to electrons in 1D wires). At finite spin imbalance, the system phase separates with an inverted phase profile, as compared to the 3D case. In 1D, we find a partially polarized core surrounded by wings which, depending on the degree of polarization, are composed of either a completely paired or a fully polarized Fermi gas. Our work paves the way to direct observation and characterization of FFLO pairing.en_US
dc.identifier.citationLiao, Yean-an, Rittner, Ann Sophie C., Paprotta, Tobias, et al.. "Spin-imbalance in a one-dimensional Fermi gas." <i>Nature,</i> 467, no. 7315 (2010) Nature Publishing Group: 567-569. http://dx.doi.org/10.1038/nature09393.en_US
dc.identifier.doihttp://dx.doi.org/10.1038/nature09393en_US
dc.identifier.urihttps://hdl.handle.net/1911/79397en_US
dc.language.isoengen_US
dc.publisherNature Publishing Groupen_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the Nature Publishing Group.en_US
dc.subject.keywordapplied physicsen_US
dc.subject.keywordengineeringen_US
dc.titleSpin-imbalance in a one-dimensional Fermi gasen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
0912.0092.pdf
Size:
772.82 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Faculty Publications
Physics and Astronomy Publications