Physics – Condensed Matter
Scientific paper
2003-12-11
Physics
Condensed Matter
4 pages, 5 figures
Scientific paper
10.1103/PhysRevB.70.214509
We have experimentally studied the electronic $3p\leftarrow 3s$ excitation of Na atoms attached to $^3$He droplets by means of laser-induced fluorescence as well as beam depletion spectroscopy. From the similarities of the spectra (width/shift of absorption lines) with these of Na on $^4$He droplets, we conclude that sodium atoms reside in a ``dimple'' on the droplet surface. The experimental results are supported by Density Functional calculations at zero temperature, which confirm the surface location of sodium on $^3$He droplets, and provide a microscopic description of the ``dimple'' structure.
Ancilotto Francesco
Barranco Manuel
Bünermann O.
Mayol Ricardo
Pi Marti
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