Pinning of quantized vortices in helium drop by dopant atoms and molecules
Condensed Matter
2009-10-31 v1
Abstract
Using a density functional method, we investigate the properties of liquid 4He droplets doped with atoms (Ne and Xe) and molecules (SF_6 and HCN). We consider the case of droplets having a quantized vortex pinned to the dopant. A liquid drop formula is proposed that accurately describes the total energy of the complex and allows one to extrapolate the density functional results to large N. For a given impurity, we find that the formation of a dopant+vortex+4He_N complex is energetically favored below a critical size N_cr. Our result support the possibility to observe quantized vortices in helium droplets by means of spectroscopic techniques.
Cite
@article{arxiv.cond-mat/0001288,
title = {Pinning of quantized vortices in helium drop by dopant atoms and molecules},
author = {Franco Dalfovo and Ricardo Mayol and Marti Pi and Manuel Barranco},
journal= {arXiv preprint arXiv:cond-mat/0001288},
year = {2009}
}
Comments
Typeset using Revtex, 3 pages and 5 figures (4 Postscript, 1 jpeg)