Finite-size corrections for the pairing Hamiltonian

Emil A. Yuzbashyan, Alexander A. Baytin, Boris L. Altshuler

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

We study the effects of superconducting pairing in small metallic grains. We show that in the limit of large Thouless conductance one can explicitly determine the low-energy spectrum of the problem as an expansion in the inverse number of electrons on the grain. The expansion is based on the formal exact solution of the Richardson model. We use this expansion to calculate finite-size corrections to the ground-state energy, Matveev-Larkin parameter, and excitation energies.

Original languageEnglish (US)
Article number094505
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number9
DOIs
StatePublished - Mar 1 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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