scholarly journals Phase separation and competition of superconductivity and magnetism in the two-dimensional Hubbard model: From strong to weak coupling

2007 ◽  
Vol 76 (22) ◽  
Author(s):  
M. Aichhorn ◽  
E. Arrigoni ◽  
M. Potthoff ◽  
W. Hanke
Keyword(s):  
Phase Separation ◽  
Hubbard Model ◽  
Weak Coupling ◽  
Two Dimensional

scholarly journals Phase separation in the two-dimensional Hubbard model: A fixed-node quantum Monte Carlo study

1998 ◽  
Vol 58 (22) ◽  
pp. R14685-R14688 ◽  
Author(s):  
A. C. Cosentini ◽  
M. Capone ◽  
L. Guidoni ◽  
G. B. Bachelet
Keyword(s):  
Monte Carlo ◽  
Phase Separation ◽  
Hubbard Model ◽  
Quantum Monte Carlo ◽  
Monte Carlo Study ◽  
Two Dimensional ◽  
Fixed Node

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.

scholarly journals Phase separation instabilities and magnetism in two dimensional square and honeycomb Hubbard model

2015 ◽  
Vol 383 ◽  
pp. 8-12 ◽  
Author(s):  
A.N. Kocharian ◽  
Kun Fang ◽  
G.W. Fernando ◽  
A.V. Balatsky
Keyword(s):  
Phase Separation ◽  
Hubbard Model ◽  
Two Dimensional
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