scholarly journals Magnetic properties and Mott transition in the square-lattice Hubbard model with frustration

2013 ◽  
Vol 88 (7) ◽  
Author(s):  
A. Yamada ◽  
K. Seki ◽  
R. Eder ◽  
Y. Ohta
Keyword(s):  
Magnetic Properties ◽  
Hubbard Model ◽  
Mott Transition ◽  
Square Lattice

Local magnetic properties of $$L\times L$$ L × L square lattice with an Extended Hubbard Model

2014 ◽  
Vol 47 (3) ◽  
pp. 523-528 ◽  
Author(s):  
A. Zouhair ◽  
S. Harir ◽  
M. Bennai ◽  
A. Migalska-Zalas ◽  
Y. Boughaleb
Keyword(s):  
Magnetic Properties ◽  
Hubbard Model ◽  
Square Lattice ◽  
Extended Hubbard Model

scholarly journals Anomalous magnetic properties near Mott transition in Kagomé lattice Hubbard model

2007 ◽  
Vol 310 (2) ◽  
pp. 879-881 ◽  
Author(s):  
T. Ohashi ◽  
S.-i. Suga ◽  
N. Kawakami ◽  
H. Tsunetsugu
Keyword(s):  
Magnetic Properties ◽  
Hubbard Model ◽  
Mott Transition ◽  
Kagome Lattice ◽  
Kagomé Lattice

Application of the Landau-Luttinger Liquid Formulation to the Study of the Magnetic Properties of the 1-D Hubbard Model

1991 ◽  
Vol 05 (01n02) ◽  
pp. 3-30 ◽  
Author(s):  
J. Carmelo ◽  
P. Horsch ◽  
P.A. Bares ◽  
A.A. Ovchinnikov
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Low Temperature ◽  
Hubbard Model ◽  
Luttinger Liquid ◽  
Liquid Formulation ◽  
One Dimensional ◽  
Spin Excitations ◽  
Arbitrary Strength ◽  
The One

The Landau-Luttinger liquid formulation is used to investigate the physics of the one-dimensional Hubbard model in a magnetic field of arbitrary strength H. The low lying charge and spin excitations are studied. A novel branch of sound wave-like spin excitations arises for H>0. The low temperature thermodynamics is considered in some detail.

SUPERCONDUCTING CLASSES IN THE EXTENDED HUBBARD MODEL

1996 ◽  
Vol 10 (12) ◽  
pp. 1397-1423 ◽  
Author(s):  
MASA-AKI OZAKI ◽  
EIJI MIYAI ◽  
TOMOAKI KONISHI ◽  
KAORU HANAFUSA
Keyword(s):  
Hubbard Model ◽  
Nearest Neighbor ◽  
Mean Field ◽  
Square Lattice ◽  
Extended Hubbard Model ◽  
S Wave ◽  
Ferromagnetic Order ◽  
Numerical Studies ◽  
The Mean

This paper describes group theoretical classification of superconducting states (SC) in the extended Hubbard model with on-site repulsion (U), nearest neighbor attraction (V) and nearest neighbour exchange interaction (J) on the two-dimensional square lattice using the mean field approach. By decomposing the pairing interaction into irreducible parts; A1g, B1g and Eu of D4h point symmetry, we have derived two singlet SCs (s-wave and d-wave) from A1g and B1g, eight triplet SCs from Eu. The first three types of triplet SC have pairing by electrons with antiparallel spin, the second two types have pairing by electrons with equal spin and the last three types are non-unitary and have pairing by only up-spin electrons. We showed that three non-unitary states have to be accompanied with a ferromagnetic order from the structure of the maximal little groups. We performed numerical studies for these SCs. For parameters and electron density favorable for the ferromagnetic order, a non-unitary SC coexistent with ferromagnetism is most stable.

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