Ground State Phase Diagrams of the Extended Hubbard Model with Repulsive Pair-Hopping Interaction for Nonfrustrated 2D Lattice

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

Abstracts

EN

We analyze the extended Hubbard model with pair-hopping interaction J, i.e. the Penson-Kolb-Hubbard model, in the case of repulsive J (J < 0) within the (broken symmetry) Hartree-Fock approximation. We focus our study on the effects of on-site U interaction on the mutual stability of magnetic, charge-ordered, and superconducting states including the eta-pairing phase, i.e. the state with the Cooper-pair center-of-mass momentum q=Q. The ground state phase diagrams are obtained for arbitrary particle concentration n on nonfrustrated d=2 square lattice.

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: 2015
• Volume: 127
• Issue: 2
• Pages: 275-277

Dates

published

2015-02

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
• [2a] A. Ptok, D. Crivelli, K.J. Kapcia, Supercond. Sci. Technol. 28, 045010 (2015), doi: 10.1088/0953-2048/28/4/045010
• [3] G.I. Japaridze, E. Muller-Hartmann, J. Phys. Condens. Matter 9, 10509 (1997), doi: 10.1088/0953-8984/9/47/018
• [3a] G.I. Japaridze, A.P. Kampf, M. Sekania, P. Kakashvili, Ph. Brune, Phys. Rev. B 65, 014518 (2001), doi: 10.1103/PhysRevB.65.014518
• [4] K.A. Penson, M. Kolb, Phys. Rev. B 33, 1663 (1986), doi: 10.1103/PhysRevB.65.014518
• [5] R. Micnas, J. Ranninger, S. Robaszkiewicz, Rev. Mod. Phys. 62, 113 (1990), doi: 10.1103/RevModPhys.62.113
• [6] G.K. Roy, B. Bhattacharyya, Phys. Rev. B 55, 15506 (1997), doi: 10.1103/PhysRevB.55.15506
• [7] S. Robaszkiewicz, W. Czart, Acta Phys. Pol. B 32, 3267 (2001) http://www.actaphys.uj.edu.pl/_cur/store/vol32/pdf/v32p3267.pdf
• [7a] W.R. Czart, S. Robaszkiewicz, Acta Phys. Pol. A 97, 217 (2000) http://przyrbwn.icm.edu.pl/APP/PDF/97/a097z1p26.pdf
• [7b] W.R. Czart, S. Robaszkiewicz, Acta Phys. Pol. A 100, 885 (2001) http://przyrbwn.icm.edu.pl/APP/PDF/100/A100Z603.pdf
• [8] W.R. Czart, S. Robaszkiewicz, Acta. Phys. Pol. A 106, 709 (2004) http://przyrbwn.icm.edu.pl/APP/PDF/106/a106z521.pdf
• [8a] W.R. Czart, S. Robaszkiewicz, Acta Phys. Pol. A 127, 278 (2015), doi: 10.12693/APhysPolA.127.278
• [9] M. Mierzejewski, M. Maśka, Phys. Rev. B 69, 054502 (2004), doi: 10.1103/PhysRevB.69.054502
• [9a] A. Ptok, M. Maśka , M. Mierzejewski, J. Phys. Condens. Matter 21, 045703 (2009), doi: 10.1088/0953-8984/21/4/045703
• [10] K. Kapcia, S. Robaszkiewicz, R. Micnas, J. Phys. Condens. Matter 24, 215601 (2012), doi: 10.1088/0953-8984/24/21/215601
• [11] 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] K. Kapcia, Acta Phys. Pol. A 121, 733 (2012) http://przyrbwn.icm.edu.pl/APP/PDF/121/a121z4p104.pdf
• [13a] K. Kapcia, J. Supercond. Nov. Magn. 26, 2647 (2013), doi: 10.1007/s10948-013-2152-1
• [14] W. Czart, T. Kostyrko, S. Robaszkiewicz, J. Magn. Magn. Mater. 140-144, 2059 (1995), doi: 10.1016/0304-8853(94)00648-2
• [15] W. Czart, T. Kostyrko, S. Robaszkiewicz, Physica C 272, 51 (1996), doi: 10.1016/S0921-4534(96)00554-0
• [16] B. Bułka, S. Robaszkiewicz, Phys. Rev. B 54, 13138 (1996), doi: 10.1103/PhysRevB.54.13138
• [17] S. Robaszkiewicz, W. Czart, Phys. Status Solidi B 236, 416 (2003), doi: 10.1002/pssb.200301693
• [17a] K.J. Kapcia, J. Supercond. Novel Magn. in press (2015), doi: 10.1007/s10948-014-2906-4
• [18] W.R. Czart, S. Robaszkiewicz, in preparation
• [19] W. Czart, S. Robaszkiewicz, Phys. Rev. B 64, 104511 (2001), doi: 10.1103/PhysRevB.64.104511

Identifiers

DOI

10.12693/APhysPolA.127.275