An experiment to investigate the superfluid transition in a confined planar geometry |
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Authors: | Tamar More Joseph Niemela Russell J Donnelly |
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Affiliation: | (1) B. I. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences, 47, Lenin Ave., 310164 Kharkov, Ukraine |
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Abstract: | The vibrational characteristics of the FCC–cryocrystals with substitutional impurities have been analyzed. A non–central impurity atom in environment of the central host atoms is considered. The difference between equilibrium interatomic distances
and r
0
of the impurity and host atoms, respectively, causes their non–central interaction. A very strong dependence of the impurity frequency spectra on the ratio
is shown. The range of the values of this ratio which corresponds to dynamical stabitity of the system under consideration is determined. |
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Keywords: | |
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