Vortex-lattice formation in a spin-orbit coupled rotating spin-1 condensate

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dc.contributor.authorAdhikari, S. K. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2021-06-25T10:45:42Z
dc.date.available2021-06-25T10:45:42Z
dc.date.issued2020-11-06
dc.description.abstractWe study the vortex-lattice formation in a rotating Rashba spin-orbit (SO) coupled quasi-two-dimensional (quasi-2D) hyper-fine spin-1 spinor Bose-Einstein condensate (BEC) in the x-y plane using a numerical solution of the underlying mean-field Gross-Pitaevskii equation. In this case, the non-rotating Rashba SO-coupled spinor BEC can have topological excitation in the form of vortices of different angular momenta in the three components, e.g. the (0, +1, +2)- and (-1, 0, +1)-type states in ferromagnetic and anti-ferromagnetic spinor BEC: the numbers in the parenthesis denote the intrinsic angular momentum of the vortex states of the three components with the negative sign denoting an anti-vortex. The presence of these states with intrinsic vorticity breaks the symmetry between rotation with vorticity along the z and -z axes and thus generates a rich variety of vortex-lattice and anti-vortex-lattice states in a rotating quasi-2D spin-1 spinor ferromagnetic and anti-ferromagnetic BEC, not possible in a scalar BEC. For weak SO coupling, we find two types of symmetries of these states - hexagonal and 'square'. The hexagonal (square) symmetry state has vortices arranged in closed concentric orbits with a maximum of 6, 12, 18⋯ (8, 12, 16⋯) vortices in successive orbits. Of these two symmetries, the square vortex-lattice state is found to have the smaller energy.en
dc.description.affiliationInstituto de Física Teórica Universidade Estadual Paulista-UNESP Sao Paulo
dc.description.affiliationUnespInstituto de Física Teórica Universidade Estadual Paulista-UNESP Sao Paulo
dc.identifierhttp://dx.doi.org/10.1088/1361-648X/abc5d7
dc.identifier.citationJournal of Physics Condensed Matter, v. 33, n. 6, 2020.
dc.identifier.doi10.1088/1361-648X/abc5d7
dc.identifier.issn1361-648X
dc.identifier.issn0953-8984
dc.identifier.scopus2-s2.0-85096927904
dc.identifier.urihttp://hdl.handle.net/11449/206900
dc.language.isoeng
dc.relation.ispartofJournal of Physics Condensed Matter
dc.sourceScopus
dc.subjectrotating superfluid dynamics
dc.subjectspin orbit coupling
dc.subjectspinor Bose Einstein condensate
dc.subjectvortex lattice
dc.titleVortex-lattice formation in a spin-orbit coupled rotating spin-1 condensateen
dc.typeArtigo

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