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2006 | 109 | 4-5 | 569-572
Article title

Finite Size Corrections in the Two-Level BCS Model

Content
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Languages of publication
EN
Abstracts
EN
Superconducting properties of small metallic grains modelled by highly degenerate two-level spectrum have been studied. We have solved numerically Richardson's exact equations for the system of 2N electrons in two levels. Characterising the size of the grain by the level degeneracy we study the finite size corrections to the thermodynamic limit of the ground and lowest excited state energy. The interparticle distance∝ N^{-1/3} seems to be the expansion parameter. The obtained results have been compared with those of other authors.
Keywords
EN
Year
Volume
109
Issue
4-5
Pages
569-572
Physical description
Dates
published
2006-04
received
2005-09-25
References
  • 1. J. von Delft, D.C. Ralph, Phys. Rep., 345, 61, 2001
  • 2. K.A. Matveev, A.J. Larkin, Phys. Rev. Lett., 78, 3749, 1997
  • 3. E.A. Yuzbashyan, A.A. Baytin, B.L. Altshuler, Phys. Rev. B, 71, 094505, 2005
  • 4. R.W. Richardson, N. Sherman, Nucl. Phys., 52, 221, 1964
  • 5. R.W. Richardson, J. Math. Phys., 6, 1034, 1965
  • 6. S. Dusuel, J. Vidal, Phys. Rev. A, 71, 060304, 2005
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv109n419kz
Identifiers
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