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Multipolar Fermi-surface deformation in a Rydberg-dressed Fermi gas with long-range anisotropic interactions

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dc.contributor.author Zhou, Yijia en_US
dc.contributor.author NATH, REJISH en_US
dc.contributor.author Wu, Haibin en_US
dc.contributor.author Lesanovsky, Igor en_US
dc.contributor.author Li, Weibin en_US
dc.date.accessioned 2022-01-03T05:03:51Z
dc.date.available 2022-01-03T05:03:51Z
dc.date.issued 2021-12 en_US
dc.identifier.citation Physical Review A, 104(6), L061302. en_US
dc.identifier.issn 2469-9934 en_US
dc.identifier.issn 2469-9926 en_US
dc.identifier.uri http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/6506
dc.identifier.uri https://doi.org/10.1103/PhysRevA.104.L061302 en_US
dc.description.abstract We study theoretically the deformation of the Fermi surface (FS) of a three-dimensional gas of Rydberg-dressed 6 Li atoms. The laser dressing to high-lying Rydberg D states results in angle-dependent soft-core-shaped interactions whose anisotropy is described by multiple spherical harmonics. We show that this can drastically modify the shape of the FS and that its deformation depends on the interplay between the Fermi momentum kF and the reciprocal momentum ¯k corresponding to the characteristic soft-core radius of the dressing-induced potential. When kF<¯k, the dressed interaction stretches a spherical FS into an ellipsoid. When kF≳¯k, complex deformations are encountered which exhibit multipolar characteristics. We analyze the formation of Cooper pairs around the deformed FS and show that they occupy large orbital angular momentum states ( p, f, and h wave) coherently. Our study demonstrates that Rydberg dressing to high angular momentum states may pave a route toward the investigation of unconventional Fermi gases and multiwave superconductivity. en_US
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.subject Cold atoms & matter waves en_US
dc.subject Cooper pairs en_US
dc.subject Fermi surface en_US
dc.subject Light-matter interaction en_US
dc.subject Long-range interactions en_US
dc.subject Quantum simulation en_US
dc.subject Atomic ensemble en_US
dc.subject Fermi gases en_US
dc.subject Rydberg atoms & molecules en_US
dc.subject BCS theory en_US
dc.subject 2021-DEC-WEEK5 en_US
dc.subject TOC-DEC-2021 en_US
dc.subject 2021 en_US
dc.title Multipolar Fermi-surface deformation in a Rydberg-dressed Fermi gas with long-range anisotropic interactions en_US
dc.type Article en_US
dc.contributor.department Dept. of Physics en_US
dc.identifier.sourcetitle Physical Review A en_US
dc.publication.originofpublisher Foreign en_US


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