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Title: Spinning superfluid He-4 nanodroplets
Author: Ancilotto, Francesco
Barranco Gómez, Manuel
Pi Pericay, Martí
Keywords: Superfluïdesa
Matèria condensada
Condensed matter
Issue Date: 25-May-2018
Publisher: American Physical Society
Abstract: We 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.
Note: Reproducció del document publicat a:
It is part of: Physical Review B, 2018, vol. 97, num. 18, p. 184515
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ISSN: 2469-9950
Appears in Collections:Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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