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Article: Spin transport in cold Fermi gases: a pseudogap interpretation of spin diffusion experiments at unitarity

TitleSpin transport in cold Fermi gases: a pseudogap interpretation of spin diffusion experiments at unitarity
Authors
KeywordsCold fermi gas
Experimental protocols
Fermi gas
Pseudo-gap
Spin diffusions
Issue Date2011
PublisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.org
Citation
Physical Review A (Atomic, Molecular and Optical Physics), 2011, v. 83 n. 6, article no. 061601 How to Cite?
AbstractWe address recent spin transport experiments in ultracold unitary Fermi gases. We provide a theoretical understanding for how the measured temperature dependence of the spin diffusivity at low T can disagree with the expected behavior of a Fermi liquid (FL), while the spin susceptiblity, following the experimental protocols, is consistent with a FL picture. We show that the experimental protocols for extracting the spin susceptibility implicitly reflect a FL viewpoint; relaxing this leads to consistency within but not proof of a pseudogap-based theory. Our transport calculations yield insight into the observed suppression of the spin diffusion constant at lower T. © 2011 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/139637
ISSN
2014 Impact Factor: 2.808
2015 SCImago Journal Rankings: 1.418
ISI Accession Number ID
Funding AgencyGrant Number
NSF-MRSEC0820054
US Department of Energy through the LANL/LDRD
Funding Information:

This work is supported by NSF-MRSEC Grant No. 0820054. C.C.C. acknowledges the support of the US Department of Energy through the LANL/LDRD Program.

 

DC FieldValueLanguage
dc.contributor.authorWulin, Den_US
dc.contributor.authorGuo, Hen_US
dc.contributor.authorChien, CCen_US
dc.contributor.authorLevin, Ken_US
dc.date.accessioned2011-09-23T05:52:49Z-
dc.date.available2011-09-23T05:52:49Z-
dc.date.issued2011en_US
dc.identifier.citationPhysical Review A (Atomic, Molecular and Optical Physics), 2011, v. 83 n. 6, article no. 061601en_US
dc.identifier.issn1050-2947-
dc.identifier.urihttp://hdl.handle.net/10722/139637-
dc.description.abstractWe address recent spin transport experiments in ultracold unitary Fermi gases. We provide a theoretical understanding for how the measured temperature dependence of the spin diffusivity at low T can disagree with the expected behavior of a Fermi liquid (FL), while the spin susceptiblity, following the experimental protocols, is consistent with a FL picture. We show that the experimental protocols for extracting the spin susceptibility implicitly reflect a FL viewpoint; relaxing this leads to consistency within but not proof of a pseudogap-based theory. Our transport calculations yield insight into the observed suppression of the spin diffusion constant at lower T. © 2011 American Physical Society.-
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.orgen_US
dc.relation.ispartofPhysical Review A (Atomic, Molecular and Optical Physics)en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong Licenseen_US
dc.subjectCold fermi gas-
dc.subjectExperimental protocols-
dc.subjectFermi gas-
dc.subjectPseudo-gap-
dc.subjectSpin diffusions-
dc.titleSpin transport in cold Fermi gases: a pseudogap interpretation of spin diffusion experiments at unitarityen_US
dc.typeArticleen_US
dc.identifier.emailGuo, H: guohao@hku.hken_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevA.83.061601-
dc.identifier.scopuseid_2-s2.0-79961050397-
dc.identifier.hkuros195419en_US
dc.identifier.volume83en_US
dc.identifier.issue6, article no. 061601-
dc.identifier.isiWOS:000291308700001-
dc.publisher.placeUnited States-

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