scholarly journals Phase diagram of the one-dimensional extended attractive Hubbard model for large nearest-neighbor repulsion

2000 ◽  
Vol 61 (10) ◽  
pp. 7028-7032 ◽  
Author(s):  
A. A. Aligia
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Nearest Neighbor ◽  
One Dimensional ◽  
Attractive Hubbard Model ◽  
The One

Influence of spin exchange anisotropy on phase diagram of the one-dimensional t-U-V-J⊥-Jz model

2014 ◽  
Vol 28 (09) ◽  
pp. 1450069
Author(s):  
Eryin Lin ◽  
Hanqin Ding ◽  
Jun Zhang
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Nearest Neighbor ◽  
Spin Exchange ◽  
Coulomb Repulsion ◽  
Exchange Anisotropy ◽  
Spin Correlations ◽  
One Dimensional ◽  
The Rich ◽  
The One

In this paper, we study analytically a one-dimensional half-filled Hubbard model with nearest-neighbor Coulomb repulsion (V) and anisotropic spin exchange (J⊥ ≠ Jz) via the bosonization and renormalization-group (RG) techniques, and establish the rich phase diagrams based on the charge-spin separation hypothesis in the weak-coupling regime. The spin exchange anisotropy induces a non-critical behavior of spin correlations. The result indicates that the spin exchange anisotropy has an important impact on the topological phase diagram of the 1D extended Hubbard model.

The Phase Diagram of the One-Dimensional Extended Hubbard Model

1995 ◽  
pp. 315-326 ◽  
Author(s):  
H. Q. Lin ◽  
E. R. Gagliano ◽  
D. K. Campbell ◽  
E. H. Fradkin ◽  
J. E. Gubernatis
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Extended Hubbard Model ◽  
One Dimensional ◽  
The One
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