Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 140, Issue 13, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4870245
Keywords
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Funding
- DGI, Spain (FEDER) [FIS2011-28617-C02-01]
- Generalitat de Catalunya [2009SGR1289]
- Swiss National Science Foundation [200021-146598]
- ME (Spain) FPI program [BES-2012-057439]
- Swiss National Science Foundation (SNF) [200021_146598] Funding Source: Swiss National Science Foundation (SNF)
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Whereas most of the phenomena associated with superfluidity have been observed in finite-size helium systems, the nucleation of quantized vortices has proven elusive. Here we show using time-dependent density functional simulations that the solvation of a Ba+ ion created by photoionization of neutral Ba at the surface of a He-4 nanodroplet leads to the nucleation of a quantized ring vortex. The vortex is nucleated on a 10 ps timescale at the equator of a solid-like solvation structure that forms around the Ba+ ion. The process is expected to be quite general and very efficient under standard experimental conditions. (C) 2014 AIP Publishing LLC.
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