Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/192747
Title: | Angular momentum in rotating superfluid droplets |
Author: | O'Connell, Sean M. O. Tanyag, Rico Mayro P. Verma, Deepak Bernando, Charles Pang, Weiwu Bacellar, Camila Saladrigas, Catherine A. Mahl, Johannes Toulson, Benjamin W. Kumagai, Yoshiaki Walter, Peter Ancilotto, Francesco Barranco Gómez, Manuel Pi Pericay, Martí Bostedt, Christoph Gessner, Oliver Vilesov, Andrey F. |
Keywords: | Superfluïdesa Teoria del funcional de densitat Matèria condensada Superfluidity Density functionals Condensed matter |
Issue Date: | 26-May-2020 |
Publisher: | American Physical Society |
Abstract: | The angular momentum of rotating superfluid droplets originates from quantized vortices and capillary waves, the interplay between which remains to be uncovered. Here, the rotation of isolated submicrometer superfluid 4He droplets is studied by ultrafast x-ray diffraction using a free electron laser. The diffraction patterns provide simultaneous access to the morphology of the droplets and the vortex arrays they host. In capsule-shaped droplets, vortices form a distorted triangular lattice, whereas they arrange along elliptical contours in ellipsoidal droplets. The combined action of vortices and capillary waves results in droplet shapes close to those of classical droplets rotating with the same angular velocity. The findings are corroborated by density functional theory calculations describing the velocity fields and shape deformations of a rotating superfluid cylinder. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.124.215301 |
It is part of: | Physical Review Letters, 2020, vol. 124, num. 21, p. 1-7 |
URI: | http://hdl.handle.net/2445/192747 |
Related resource: | https://doi.org/10.1103/PhysRevLett.124.215301 |
ISSN: | 0031-9007 |
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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701401.pdf | 3.21 MB | Adobe PDF | View/Open |
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