Ancilotto, FrancescoBarranco Gómez, ManuelPi Pericay, Martí2019-11-082019-11-082018-05-252469-9950https://hdl.handle.net/2445/144299We have studied spinning superfluid He-4 nanodroplets at zero temperature using density functional theory. Due to the irrotational character of the superfluid flow, the shapes of the spinning nanodroplets are very different from those of a viscous normal fluid drop in steady rotation. We show that when vortices are nucleated inside the superfluid droplets, their morphology, which evolves from axisymmetric oblate to triaxial prolate to two-lobed shapes, is in good agreement with experiments. The presence of vortex arrays confers to the superfluid droplets the rigid-body behavior of a normal fluid in steady rotation, and this is the ultimate reason for the surprising good agreement between recent experiments and the classical models used for their description.application/pdfeng(c) American Physical Society, 2018SuperfluïdesaMatèria condensadaSuperfluidityCondensed matterinfo:eu-repo/semantics/article6854982019-11-08info:eu-repo/semantics/openAccess