scholarly journals Unconventional superconductivity in the extended Hubbard model: Weak-coupling renormalization group

2018 ◽  
Vol 98 (17) ◽  
Author(s):  
Sebastian Wolf ◽  
Thomas L. Schmidt ◽  
Stephan Rachel
Keyword(s):  
Renormalization Group ◽  
Hubbard Model ◽  
Weak Coupling ◽  
Unconventional Superconductivity ◽  
Extended Hubbard Model

SPIN GAPLESS BOND-ORDERED PHASE IN THE EXTENDED HUBBARD CHAIN WITH SPIN-DEPENDENT REPULSION

2011 ◽  
Vol 25 (27) ◽  
pp. 3555-3568 ◽  
Author(s):  
HANQIN DING ◽  
JUN ZHANG
Keyword(s):  
Phase Diagram ◽  
Renormalization Group ◽  
Weak Coupling ◽  
Nearest Neighbor ◽  
Density Wave ◽  
Spin Density Wave ◽  
Extended Hubbard Model ◽  
Weak Coupling Regime ◽  
One Dimensional ◽  
Plane Anisotropy

Using the field theoretical bosonization and renormalization group techniques, we analytically study quantum phase diagram of a one-dimensional half-filled extended Hubbard model with on-site (U) and spin-dependent nearest-neighbor interactions (V⊥, V‖) in the weak coupling regime. In the case of easy-plane anisotropy (V⊥ > V‖) and at V‖ < U/2, the existence of bond-ordered spin-density-wave phase, corresponding to spin gapless transverse magnetization located on bonds (BSDW±) is shown.

Superconductivity of the Weak-Coupling Extended Hubbard Model

1988 ◽  
Vol 146 (2) ◽  
pp. K115-K118 ◽  
Author(s):  
Lianping Wang ◽  
Guangtian Zou ◽  
Lizhong Wang
Keyword(s):  
Hubbard Model ◽  
Weak Coupling ◽  
Extended Hubbard Model
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