scholarly journals Pairing correlations in the attractive Hubbard model on chains, ladders, and squares

2000 ◽  
Vol 62 (1) ◽  
pp. 600-614 ◽  
Author(s):  
M. Guerrero ◽  
G. Ortiz ◽  
J. E. Gubernatis
Keyword(s):  
Hubbard Model ◽  
Pairing Correlations ◽  
Attractive Hubbard Model

scholarly journals Pairing correlations in the two-layer attractive Hubbard model

2014 ◽  
Vol 16 (1) ◽  
pp. 013004 ◽  
Author(s):  
Aleksander Zujev ◽  
Richard T Scalettar ◽  
George G Batrouni ◽  
Pinaki Sengupta
Keyword(s):  
Hubbard Model ◽  
Pairing Correlations ◽  
Attractive Hubbard Model

scholarly journals Pairing symmetries in the Zeeman-coupled extended attractive Hubbard model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Swagatam Nayak ◽  
Navketan Batra ◽  
Sanjeev Kumar
Keyword(s):  
Hubbard Model ◽  
Mean Field ◽  
Field Approach ◽  
Hartree Fock ◽  
Average Electron Density ◽  
Pairing Symmetries ◽  
Pairing Correlations ◽  
Attractive Hubbard Model ◽  
Average Electron ◽  
Superconducting Pairing

AbstractBy introducing the possibility of equal- and opposite-spin pairings concurrently, we show that the ground state of the extended attractive Hubbard model (EAHM) exhibits rich phase diagrams with a variety of singlet, triplet, and mixed parity superconducting orders. We study the competition between these superconducting pairing symmetries invoking an unrestricted Hartree–Fock–Bogoliubov–de Gennes (HFBdG) mean-field approach, and we use the d-vector formalism to characterize the nature of the stabilized superconducting orders. We discover that, while all other types of orders are suppressed, a non-unitary triplet order dominates the phase space in the presence of an in-plane external magnetic field. We also find a transition between a non-unitary to unitary superconducting phase driven by the change in average electron density. Our results serve as a reference for identifying and understanding the nature of superconductivity based on the symmetries of the pairing correlations. The results further highlight that EAHM is a suitable effective model for describing most of the pairing symmetries discovered in different materials.

scholarly journals Pairing correlations in the cuprates: A numerical study of the three-band Hubbard model

2021 ◽  
Vol 103 (14) ◽  
Author(s):  
Peizhi Mai ◽  
Giovanni Balduzzi ◽  
Steven Johnston ◽  
Thomas A. Maier
Keyword(s):  
Hubbard Model ◽  
Numerical Study ◽  
Pairing Correlations

scholarly journals Pairing correlations in a generalized Hubbard model for the cuprates

2000 ◽  
Vol 61 (14) ◽  
pp. 9686-9689 ◽  
Author(s):  
Liliana Arrachea ◽  
A. A. Aligia
Keyword(s):  
Hubbard Model ◽  
Pairing Correlations ◽  
Generalized Hubbard Model

scholarly journals Optimal Superconducting Critical Temperature in the Two-Dimensional Attractive Hubbard Model

1991 ◽  
Vol 16 (5) ◽  
pp. 509-509 ◽  
Author(s):  
P. J. H Denteneer ◽  
Guozhong An ◽  
J. M. J. van Leeuwen
Keyword(s):  
Critical Temperature ◽  
Hubbard Model ◽  
Two Dimensional ◽  
Attractive Hubbard Model

Erratum: Excitation spectrum of the attractive Hubbard model

1996 ◽  
Vol 54 (5) ◽  
pp. 3662-3662 ◽  
Author(s):  
R. Micnas ◽  
M. H. Pedersen ◽  
S. Schafroth ◽  
T. Schneider ◽  
J. J. Rodríguez-Níñez ◽  
...  
Keyword(s):  
Hubbard Model ◽  
Excitation Spectrum ◽  
Attractive Hubbard Model
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