scholarly journals d- andp-Wave Superconductivity Mediated by Spin Fluctuations in Two- and Three-Dimensional Single-Band Repulsive Hubbard Model

2000 ◽  
Vol 69 (4) ◽  
pp. 1181-1191 ◽  
Author(s):  
Ryotaro Arita ◽  
Kazuhiko Kuroki ◽  
Hideo Aoki
Keyword(s):  
Hubbard Model ◽  
Three Dimensional ◽  
Single Band ◽  
Spin Fluctuations

scholarly journals One-particle spectral weight of the three-dimensional single-band Hubbard model

1996 ◽  
Vol 54 (23) ◽  
pp. 16523-16532 ◽  
Author(s):  
M. Ulmke ◽  
R. T. Scalettar ◽  
A. Nazarenko ◽  
E. Dagotto
Keyword(s):  
Hubbard Model ◽  
Three Dimensional ◽  
Spectral Weight ◽  
Single Band

Effective Single-Band Hamiltonian for the Three-Dimensional Hubbard Model

1993 ◽  
Vol 176 (2) ◽  
pp. 441-450 ◽  
Author(s):  
J. J. Rodríguez-núntez ◽  
R. Medina ◽  
P. Silva
Keyword(s):  
Hubbard Model ◽  
Three Dimensional ◽  
Single Band

scholarly journals Efficient fluctuation-exchange approach to low-temperature spin fluctuations and superconductivity: From the Hubbard model to NaxCoO2·yH2O

2021 ◽  
Vol 103 (20) ◽  
Author(s):  
Niklas Witt ◽  
Erik G. C. P. van Loon ◽  
Takuya Nomoto ◽  
Ryotaro Arita ◽  
Tim O. Wehling
Keyword(s):  
Low Temperature ◽  
Hubbard Model ◽  
Spin Fluctuations

scholarly journals Spectral properties of the three-dimensional Hubbard model

2011 ◽  
Vol 83 (23) ◽  
Author(s):  
Sebastian Fuchs ◽  
Emanuel Gull ◽  
Matthias Troyer ◽  
Mark Jarrell ◽  
Thomas Pruschke
Keyword(s):  
Hubbard Model ◽  
Spectral Properties ◽  
Three Dimensional

PHASE SEPARATION IN THE TWO-DIMENSIONAL HUBBARD MODEL

2005 ◽  
Vol 19 (01n03) ◽  
pp. 299-302 ◽  
Author(s):  
M. YU ◽  
H. Q. LIN
Keyword(s):  
Phase Separation ◽  
Hubbard Model ◽  
Coulomb Interaction ◽  
Single Band ◽  
Study Phase ◽  
Two Dimensional ◽  
Stripe Phase ◽  
Hartree Fock ◽  
Band Filling

In this paper, we study phase separation in the two-dimensional single-band Hubbard model with the unrestricted Hartree-Fock(UHF) method and the restricted Hartree-Fock (RHF) method. We perform the calculation for square lattices and rectangle lattices. It is observed that the stripe phase exists and it depends on three aspects: geometry of the lattice, Coulomb interaction U and band filling n. To gain more physical insights, we consider the Hubbard model with spin dependent hoppings: t↑ and t↓, and study the effect of varying [Formula: see text] on the phase separation.

REENTRANT CHARGE ORDERING BEHAVIOUR IN THE EXTENDED HUBBARD MODEL

2001 ◽  
Vol 15 (26) ◽  
pp. 1217-1224 ◽  
Author(s):  
ANH TUAN HOANG
Keyword(s):  
Hubbard Model ◽  
Three Dimensional ◽  
Charge Ordering ◽  
Coherent Potential Approximation ◽  
Coulomb Energy ◽  
Extended Hubbard Model ◽  
Potential Approximation ◽  
Ordering Transition

We study the charge ordering behavior in a three-dimensional extended Hubbard model using the Coherent potential approximation (CPA). It is shown that the charge ordering transition occurs due to the competition between kinetic and Coulomb energy. At various band fillings a simple reentrant behavior of the charge ordering transition is found.

Sign in / Sign up

Export Citation Format

Share Document