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Superfluid fraction of a charged boson fluid at non‐integer dimensions and superconducting films
Author(s) -
Kim SangHoon,
Koo Kim Chul,
Nahm Kyun
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200301507
Subject(s) - superfluidity , superconductivity , boson , physics , universality (dynamical systems) , condensed matter physics , quantum mechanics
The superfluid fraction of a charged boson fluid at non‐integer dimensions between 2 and 3 is studied. Interaction between particles is assumed to be Coulombic, and Bogoliubov approximation is applied for a weak coupling regime. The theoretical results are compared with the superfluid densities of superconducting films, showing an universal splitting behavior. The qualitative similarity between the charged boson fluid and the superconducting films gives a strong clue for the origin of the universality observed in the superconducting films.