Generic Finite Size Enhancement of Pairing in Mesoscopic Fermi Systems

Details Generic Finite Size Enhancement of Pairing in Mesoscopic Fermi Systems Generic Finite Size Enhancement of Pairing in Mesoscopic Fermi Systems

2002-07-11

arxiv.org/abs/cond-mat/0207297v3

Physics

Condensed Matter

Superconductivity

Updated version 17/02/03

Scientific paper

10.1103/PhysRevB.68.024507

The finite size dependent enhancement of pairing in mesoscopic Fermi systems is studied under the assumption that the BCS approach is valid and that the two body force is size independent. Different systems are investigated such as superconducting metallic grains and films as well atomic nuclei. It is shown that the finite size enhancement of pairing in these systems is in part due to the presence of a surface which accounts quite well for the data of nuclei and explains a good fraction of the enhancement in Al grains.

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