6533b7d1fe1ef96bd125cdb0

RESEARCH PRODUCT

Three-dimensional skyrmions in spin-2 Bose–Einstein condensates

Konstantin TiurevDavid HallTuomas OllikainenMikio NakaharaMikio NakaharaMikko MöttönenMikko MöttönenPekko KuopanporttiPekko Kuopanportti

subject

spinor condensateSUPERFLUID HE-3Angular momentumSYMMETRYFOS: Physical sciencesGeneral Physics and AstronomyBose-Einstein condensation114 Physical sciences01 natural sciencesInstability010305 fluids & plasmaslaw.inventionPHASESKNOTSlaw0103 physical sciencesField theory (psychology)magnetismikvanttifysiikka010306 general physicsVORTICESSpin-½Condensed Matter::Quantum GasesPhysicsBose–Einstein condensationBiaxial nematicCondensed matter physicsSkyrmionMONOPOLESCondensed Matter::Mesoscopic Systems and Quantum Hall EffectFIELD-THEORYSymmetry (physics)skyrmionQuantum Gases (cond-mat.quant-gas)Condensed Matter - Quantum GasesBose–Einstein condensate

description

We introduce topologically stable three-dimensional skyrmions in the cyclic and biaxial nematic phases of a spin-2 Bose-Einstein condensate. These skyrmions exhibit exceptionally high mapping degrees resulting from the versatile symmetries of the corresponding order parameters. We show how these structures can be created in existing experimental setups and study their temporal evolution and lifetime by numerically solving the three-dimensional Gross-Pitaevskii equations for realistic parameter values. Although the biaxial nematic and cyclic phases are observed to be unstable against transition towards the ferromagnetic phase, their lifetimes are long enough for the skyrmions to be imprinted and detected experimentally.

yearjournalcountryeditionlanguage
2017-11-03New Journal of Physics
https://doi.org/10.1088/1367-2630/aac2a8