scholarly journals Quantum phase diagram of a Moiré-Hubbard model

2020 ◽  
Vol 102 (20) ◽  
Author(s):  
Haining Pan ◽  
Fengcheng Wu ◽  
Sankar Das Sarma
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Quantum Phase

scholarly journals Quantum phase diagram of the generalized ionic Hubbard model forABnchains

2006 ◽  
Vol 73 (11) ◽  
Author(s):  
M. E. Torio ◽  
A. A. Aligia ◽  
G. I. Japaridze ◽  
B. Normand
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Quantum Phase ◽  
Ionic Hubbard Model

scholarly journals Phase diagram of the Bose-Hubbard Model

1994 ◽  
Vol 26 (7) ◽  
pp. 545-550 ◽  
Author(s):  
J. K Freericks ◽  
H Monien
Keyword(s):  
Phase Diagram ◽  
Hubbard Model

Phase diagram of an extended Hubbard model with correlated hopping at half filling

1995 ◽  
Vol 51 (19) ◽  
pp. 13774-13777 ◽  
Author(s):  
A. A. Aligia ◽  
Liliana Arrachea ◽  
E. R. Gagliano
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Extended Hubbard Model ◽  
Half Filling

scholarly journals Phase diagram of the two-chain Hubbard model

1999 ◽  
Vol 59 (4) ◽  
pp. 2587-2590 ◽  
Author(s):  
Youngho Park ◽  
Shoudan Liang ◽  
T. K. Lee
Keyword(s):  
Phase Diagram ◽  
Hubbard Model

T = 0 phase diagram of the 1D Hubbard model with magnetic interactions in the narrow band limit

Open Physics ◽  
2012 ◽  
Vol 10 (3) ◽  
Author(s):  
Ferdinando Mancini ◽  
Evgeny Plekhanov ◽  
Gerardo Sica
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Narrow Band ◽  
Operator Method ◽  
Magnetic Interactions ◽  
Exchange Constant ◽  
Local Charge ◽  
Spin Interactions ◽  
Charge Interaction ◽  
Composite Operator Method

AbstractIn this paper we study a generalization of the Hubbard model by considering spin-spin interactions described by the exchange constant J. An external magnetic field his also taken into account. In the narrowband limit and for the 1D case, we present the exact solution obtained in the framework of the Green’s function formalism, using the Composite Operator Method. We report the T = 0 phase diagram for both ferro (J > 0) and anti-ferro (J < 0) couplings. The competition of the different energy scales (U, J, and h; being U the local charge interaction) generates a variety of phases and different charge and spin orderings.

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