1999/04/14 by C. P. Moca, Cătălin Paşcu Moca, I. Ţifrea +6
Engineering · Physics and Astronomy · #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications #Superconductivity in MgB2 and Alloys #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/9904197
arxiv created 1999/04/14 · arxiv updated 2009/11/30
Using the field-theoretical methods we studied the evolution from BCS description of a non-Fermi superconductor to that of Bose-Einstein condensation (BEC) in one loop approximation. We showed that the repulsive interaction between composite bosons is determined by the exponent α of the Anderson propagator in a two dimensional model. For \a≠ 0 the crossover is also continous and for \a=0 we obtain the case of the Fermi liquid.