Title variants
Languages of publication
Abstracts
The two-level version of the Richardson model presents a unique possibility to calculate numerically exactly thermodynamic properties of the system it describes. The point is that all energies and the degeneracies of the many-body system can be easily calculated. The energies are given by the eigenvalues of the small (of order of N×N, where 2N is a number of electrons in the system) tridiagonal matrices. Here we numerically obtain a complete spectrum of the interacting two-level model and calculate the specific heat and the pairing energy of the small system at finite temperatures.
Discipline
- 73.22.Gk: Broken symmetry phases
- 61.46.-w: Structure of nanoscale materials(for thermal properties of nanocrystals and nanotubes, see 65.80.-g; for mechanical properties of nanoscale systems, see 62.25.-g; for electronic transport in nanoscale materials, see 73.63.-b; see also 62.23.-c Structural classes of nanoscale systems; 64.70.Nd Structural transitions in nanoscale materials; for magnetic properties of nanostructures, see 75.75.-c)
- 74.90.+n: Other topics in superconductivity (restricted to new topics in section 74)
Journal
Year
Volume
Issue
Pages
467-473
Physical description
Dates
published
2007-04
received
2006-09-14
Contributors
author
- Institute of Physics and Nanotechnology Centre, M. Curie-Skłodowska University, Radziszewskiego 10, 20-031 Lublin, Poland
author
- Institute of Physics and Nanotechnology Centre, M. Curie-Skłodowska University, Radziszewskiego 10, 20-031 Lublin, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv111n406kz