Excitation spectra of a 3He impurity on 4He clusters

Details Excitation spectra of a 3He impurity on 4He clusters Excitation spectra of a 3He impurity on 4He clusters

2004-01-27

arxiv.org/abs/cond-mat/0401542v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevA.70.023206

The diffusion Monte Carlo technique is used to calculate and analyze the excitation spectrum of a single 3He atom bound to a cluster with N 4He atoms, with the aim of establishing the most adequate filling ordering of single-fermion orbits to the mixed clusters with a large number of 3He atoms. The resulting ordering looks like the rotational spectrum of a diatomic molecule, being classified only by the angular momentum of the level, although vibrational-like excitations appear at higher energies for sufficiently large N.

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