Superconductivity of the Two-Dimensional Penson-Kolb Model

• Authors: W. Czart , S. Robaszkiewicz
• Languages of publication: EN

Abstracts

EN

Two-dimensional (d=2) Penson-Kolb model, i.e. the tight-binding model with the pair-hopping (intersite charge exchange) interaction, is considered and the effects of phase fluctuations on the s-wave superconductivity of this system are discussed within the Kosterlitz-Thouless scenario. The London penetration depth λ at T=0, the Kosterlitz-Thouless critical temperature T_c, and the Hartree-Fock approximation critical temperature T_p are determined as a function of particle concentration and interaction. The Uemura type plots (T_c vs.λ^{-2}(0)) are derived. Beyond weak coupling and for low concentrations they show the existence of universal scaling: T_c ~1/λ^2(0), as it was previously found for the attractive Hubbard model and for the models with intersite electron pairing.

Keywords

EN

74.20.-z; 71.28.+d; 74.25.Ha

Discipline

• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 74.20.-z: Theories and models of superconducting state
• 71.28.+d: Narrow-band systems; intermediate-valence solids(for magnetic aspects, see 75.20.Hr and 75.30.Mb in magnetic properties and materials)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2001
• Volume: 100
• Issue: 6
• Pages: 885-895

Dates

published

2001-12

received

2001-07-02

Contributors

author

W. Czart

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

author

S. Robaszkiewicz

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

References

• 1. K.A. Penson, M. Kolb, Phys. Rev. B, 33, 1663, 1986
• 2. S. Robaszkiewicz, B. Bułka, Phys. Rev. B, 59, 6430, 1999 and references therein
• 3. I. Affleck, J.B. Marston, J. Phys. C, 21, 2511, 1988
• 4. A.E. Sikkema, I. Affleck, Phys. Rev. B, 52, 10207, 1995
• 5. M. van den Bossche, M. Caffarel, Phys. Rev. B, 54, 17414, 1996
• 6. G. Bouzerar, G.I. Japaridze, Z. Phys. B, 104, 215, 1997
• 7. G.I. Japaridze, E. Muller-Hartmann, J. Phys., Condens. Matter, 9, 10509, 1997
• 8. W.R. Czart, S. Robaszkiewicz, Acta Phys. Pol. A, 97, 217, 2000
• 9. D.J. Scalapino, S.R. White, S. Zhang, Phys. Rev. B, 47, 7995, 1993
• 10. (a) W.R. Czart, T. Kostyrko, S. Robaszkiewicz, Physica C, 272, 51, 1996; (b) B. Bułka, S. Robaszkiewicz, Phys. Rev. B, 54, 13138, 1996
• 11. J.M. Kosterlitz, D.J. Thouless, J. Phys. C, 6, 1181, 1973
• 12. P.J.H. Denteneer, Guozhong An, M.J. van Leeuven, Phys. Rev. B, 47, 6256, 1993; M.J. van Leeuven, M.S.L. du Crao de Jongh, P.J.H. Denteneer, J. Phys. A, 29, 41, 1996
• 13. (a) J.M. Singer, T. Schneider, M. Pedersen, Eur. Phys. J. B, 2 17, 1998; (b) M. Bąk, R. Micnas, J. Phys., Condens. Matter, 10, 9029, 1998
• 14. B. Chattopadhyay, Phys. Lett. A, 226, 231, 1997; B. Chattopadhyay, D.M. Gaitonde, A. Taraphder, Europhys. Lett., 34, 705, 1996
• 15. R. Micnas, S. Robaszkiewicz, B. Tobijaszewska, J. Supercond., 12, 79, 1999
• 16. B. Tobijaszewska, R. Micnas, Acta Phys. Pol. A, 97, 393, 2000; R. Micnas, B. Tobijaszewska, unpublished
• 17. Y.J. Uemura, G.M. Luke, B.J. Sternlieb, J.H. Brewer, J.F. Carolan, W.N. Hardy, R. Kadono, J.R. Kempton, R.F. Kiefl, S.R. Kreitzman, P. Mulhern, T.M. Riseman, D. Ll. Williams, B.X. Yang, S. Uchida, H. Takagi, J. Gopalakrishnan, A.W. Sleight, M.A. Subramanian, C.L. Chien, M.Z. Cieplak, Gang Xiao, V.Y. Lee, B.W. Statt, C.E. Stronach, W.J. Kossler, X.H. Yu, Phys. Rev. Lett., 62, 2317, 1989; ibid., 66, 2665, 1991
• 18. Y.J. Uemura, Physica C, 282-287, 194, 1997
• 19. G.K. Roy, B. Bhattacharyya, Phys. Rev. B, 55, 15506, 1997
• 20. T. Kostyrko, R. Micnas, Phys. Rev. B, 46, 11025, 1992

Identifiers

DOI

10.12693/APhysPolA.100.885