Phase Diagrams of the Penson-Kolb-Hubbard Model with Repulsive Pair-Hopping Interaction

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

Abstracts

EN

We study the extended Hubbard model with on-site density-density U and intersite pair hopping J interactions, i.e. the Penson-Kolb-Hubbard model. This report focuses mainly on the properties of the model at T ≥q 0 in the case of repulsive J (J < 0) which may stabilize superconductivity with η-pairing. The analysis is performed within the (broken symmetry) Hartree-Fock approximation for arbitrary interaction parameters (J < 0 and U) and electron concentration (0 < n < 2) on the d = 2 square lattice. The phase diagrams of the model at T=0 and at finite temperatures are examined taking into account magnetic and charge-ordered phases and superconducting states with η- and s-wave pairing.

Keywords

EN

74.20.-z; 71.28.+d; 74.20.Mn

Discipline

• 74.20.-z: Theories and models of superconducting state
• 74.20.Mn: Nonconventional mechanisms
• 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: 2016
• Volume: 130
• Issue: 2
• Pages: 613-616

Dates

published

2016-08

Contributors

author

W. Czart

• Electron States of Solids Division, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

S. Robaszkiewicz

• Electron States of Solids Division, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

References

• [1] A. Hui, S. Doniach, Phys. Rev. B 48, 2063 (1993), doi: 10.1103/PhysRevB.48.2063
• [2] S. Robaszkiewicz, B. Bułka, Phys. Rev. B 59, 6430 (1999) and references therein, doi: 10.1103/PhysRevB.59.6430
• [3] G.I. Japaridze, A.P. Kampf, M. Sekania, P. Kakashvili, Ph. Brune, Phys. Rev. B 65, 014518 (2001) , doi: 10.1103/PhysRevB.65.014518
• [3a] G.I. Japaridze, E. Müller-Hartmann, J. Phys. Condens. Matter 9, 10509 (1997) , doi: 10.1088/0953-8984/9/47/018
• [3b] G.I. Japaridze, S. Sarkar, Eur. Phys. J. B 27, 139 (2002), doi: 10.1140/epjb/e2002-00212-0
• [4] R. Micnas, J. Ranninger, S. Robaszkiewicz, Rev. Mod. Phys. 62, 113 (1990), doi: 10.1103/RevModPhys.62.113
• [5] S. Robaszkiewicz, W. Czart, Acta Phys. Pol. B 32, 3267 (2001)
• [6] W. Czart, S. Robaszkiewicz, Phys. Rev. B 64, 104511 (2001), doi: 10.1103/PhysRevB.64.104511
• [7] A. Ptok, K.J. Kapcia, Supercond. Sci. Technol. 28, 045022 (2015) , doi: 10.1088/0953-2048/28/4/045022
• [7a] A. Ptok, D. Crivelli, K.J. Kapcia, Supercond. Sci. Technol. 28, 045010 (2015) , doi: 10.1088/0953-2048/28/4/045010
• [7b] K.J. Kapcia, W.R. Czart, A. Ptok, J. Phys. Soc. Jpn. 85, 044708 (2016), doi: 10.7566/JPSJ.85.044708
• [8] W. Czart, S. Robaszkiewicz, Acta Phys. Pol. A 127, 278 (2015), doi: 10.12693/APhysPolA.127.278
• [9] W. Czart, S. Robaszkiewicz, Acta Phys. Pol. A 127, 275 (2015), doi: 10.12693/APhysPolA.127.275
• [10] M. Mierzejewski, M. Maśka, Phys. Rev. B 69, 054502 (2004) , doi: 10.1103/PhysRevB.69.054502
• [10a] A. Ptok, M. Maśka, M. Mierzejewski, J. Phys. Condens. Matter 21, 295601 (2009) , doi: 10.1088/0953-8984/21/29/295601
• [10b] A. Ptok, M.M. Maśka, M. Mierzejewski, Phys. Rev. B 84, 094526 (2011), doi: 10.1103/PhysRevB.84.094526
• [11] K. Kapcia, S. Robaszkiewicz, R. Micnas, J. Phys. Condens. Matter 24, 215601 (2012) , doi: 10.1088/0953-8984/24/21/215601
• [11a] K. Kapcia, J. Supercond. Nov. Magn. 27, 913 (2014), doi: 10.1007/s10948-013-2409-8
• [12] K. Kapcia, S. Robaszkiewicz, J. Phys. Condens. Matter 25, 065603 (2013) , doi: 10.1088/0953-8984/25/6/065603
• [12a] K.J. Kapcia, Acta Phys. Pol. A 126, A-53 (2014), doi: 10.12693/APhysPolA.126.A-53
• [13] A. Belkasri, F.D. Buzatu, Phys. Rev. B 53, 7171 (1996) , doi: 10.1103/PhysRevB.53.7171
• [13a] F. Dolcini, A. Montorsi, Phys. Rev. B 62, 2315 (2000), doi: 10.1103/PhysRevB.62.2315
• [14] K. Kapcia, Acta Phys. Pol. A 121, 733 (2012) , doi: 10.12693/APhysPolA.121.733
• [14a] K. Kapcia, J. Supercond. Nov. Magn. 26, 2647 (2013) , doi: 10.1007/s10948-013-2152-1
• [14b] K.J. Kapcia, J. Supercond. Nov. Magn. 28, 1289 (2015) , doi: 10.1007/s10948-014-2906-4
• [14c] K.J. Kapcia, Acta Phys. Pol. A 127, 204 (2015), doi: 10.12693/APhysPolA.127.204
• [15] A.J. Leggett, in: Modern Trends in the Theory of Condensed Matter, Eds. A. Pekalski, J. Przystawa, Springer, Berlin 1980, p. 13
• [16] W. R. Czart, S. Robaszkiewicz, in preparation
• [17] S. Robaszkiewicz, W. Czart, Phys. Status Solidi B 236, 416 (2003), doi: 10.1002/pssb.200301693
• [17a] W.R. Czart, S. Robaszkiewicz, B. Tobijaszewska, Phys. Status Solidi B 244, 2327 (2007), doi: 10.1002/pssb.200674607
• [18] W. Czart, S. Robaszkiewicz, Acta Phys. Pol. A 106, 709 (2004), doi: 10.12693/APhysPolA.106.709
• [19] W.R. Czart, S. Robaszkiewicz, Acta Phys. Pol. A 97, 217 (2000), doi: 10.12693/APhysPolA.97.217
• [19a] W. Czart, S. Robaszkiewicz, Acta Phys. Pol. A 100, 885 (2001), doi: 10.12693/APhysPolA.100.885
• [19b] A. Ptok, M. Mierzejewski, Acta Phys. Pol. A 114, 885 (2008), doi: 10.12693/APhysPolA.114.885
• [20] W. Czart, T. Kostyrko, S. Robaszkiewicz, J. Magn. Magn. Mater. 140-144, 2059 (1995), doi: 10.1016/0304-8853(94)00648-2
• [21] W. Czart, T. Kostyrko, S. Robaszkiewicz, Physica C 272, 51 (1996), doi: 10.1016/S0921-4534(96)00554-0
• [22] B. Bułka, S. Robaszkiewicz, Phys. Rev. B 54, 13138 (1996), doi: 10.1103/PhysRevB.54.13138

Identifiers

DOI

10.12693/APhysPolA.130.613