Critical Values for Electron Pairing in t-U-J-V and t-J-V Models

• Authors: M. Bak
• Languages of publication: EN

Abstracts

EN

The critical values for pairing of s*- and d-wave symmetry are calculated within the t-U-J-V and the t-J-V models in renormalized mean field theory. It is shown that the first model yields the proper critical values in the low density limit while the other does not. Renormalized mean field theory strongly decreases the absolute value of (negative) critical values for larger electron densities.

Keywords

EN

74.20.-z; 74.20.Fg; 74.20.Rp; 74.25.Dw; 71.10.Fd; 71.27.+a

Discipline

• 74.20.Fg: BCS theory and its development
• 74.20.-z: Theories and models of superconducting state
• 71.27.+a: Strongly correlated electron systems; heavy fermions
• 71.10.Fd: Lattice fermion models (Hubbard model, etc.)
• 74.25.Dw: Superconductivity phase diagrams
• 74.20.Rp: Pairing symmetries (other than s-wave)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 1
• Pages: 275-279

Dates

published

2008-07

received

2007-11-06

Contributors

author

M. Bak

• Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.114.275