Superconductivity in the Penson-Kolb Model on a Triangular Lattice

• Authors: A. Ptok , M. Mierzejewski
• Languages of publication: EN

Abstracts

EN

We investigate properties of the two-dimensional Penson-Kolb model with repulsive pair hopping interaction. In the case of a bipartite square lattice this interaction may lead to the eta-type pairing, when the phase of superconducting order parameter changes from one lattice site to the neighboring one. We show that this interaction may be responsible for the onset of superconductivity also for a triangular lattice. We discuss the spatial dependence of the superconducting order parameter and demonstrate that the total momentum of the paired electrons is determined by the lattice geometry.

Keywords

EN

74.20.-z; 74.20.Rp

Discipline

• 74.20.-z: Theories and models of superconducting state
• 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: 209-212

Dates

published

2008-07

received

2007-11-06

Contributors

author

A. Ptok

• Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

author

M. Mierzejewski

• Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

References

• 1. K.A. Penson, M. Kolb, Phys. Rev. B 33, 1663 (1986)
• 2. S. Robaszkiewicz, B.R. Bułka, Phys. Rev. B 59, 6430 (1999)
• 3. W.R. Czart, S. Robaszkiewicz, Phys. Rev. B 64, 104511 (2001)
• 4. S. Robaszkiewicz, W.R. Czart, Phys. Status Solidi B 236, 416 (2003)
• 5. M. Mierzejewski, M.M. Maśka, Phys. Rev. B 69, 054502 (2004)
• 6. C.N. Yang, Phys. Rev. Lett. 63, 2144 (1989)

Identifiers

DOI

10.12693/APhysPolA.114.209