Fermi-liquid and non-Fermi-liquid phases of an extended Hubbard model in infinite dimensions

1993 ◽  
Vol 70 (20) ◽  
pp. 3143-3146 ◽  
Author(s):  
Qimiao Si ◽  
G. Kotliar
Keyword(s):  
Hubbard Model ◽  
Fermi Liquid ◽  
Extended Hubbard Model ◽  
Infinite Dimensions ◽  
Liquid Phases

Non-Fermi liquid and Mott transition in the multi-channel two-band Hubbard model in infinite dimensions

2000 ◽  
Vol 281-282 ◽  
pp. 410-411 ◽  
Author(s):  
Yoshiaki Ōno ◽  
Atsushi Tsuruta ◽  
Tamifusa Matsuura ◽  
Yoshihiro Kuroda
Keyword(s):  
Hubbard Model ◽  
Fermi Liquid ◽  
Mott Transition ◽  
Infinite Dimensions

scholarly journals Thermodynamics of the metal-insulator transition in the extended Hubbard model

2019 ◽  
Vol 6 (6) ◽  
Author(s):  
Malte Schüler ◽  
Erik van Loon ◽  
Mikhail Katsnelson ◽  
Tim Wehling
Keyword(s):  
Hubbard Model ◽  
Fermi Liquid ◽  
Insulator Transition ◽  
Extended Hubbard Model ◽  
Metal Insulator Transition ◽  
Local Interactions ◽  
Metal Insulator ◽  
First Order ◽  
Local Correlations ◽  
Non Local

In contrast to the Hubbard model, the extended Hubbard model, which additionally accounts for non-local interactions, lacks systemic studies of thermodynamic properties especially across the metal-insulator transition. Using a variational principle, we perform such a systematic study and describe how non-local interactions screen local correlations differently in the Fermi-liquid and in the insulator. The thermodynamics reveal that non-local interactions are at least in parts responsible for first-order metal-insulator transitions in real materials.

Stability ofs+id-Wave Pairing State in the 2-D Extended Hubbard Model

1995 ◽  
Vol 64 (3) ◽  
pp. 922-926 ◽  
Author(s):  
Hiroki Tsuchiura ◽  
Yukio Tanaka ◽  
Yasunari Ushijima
Keyword(s):  
Hubbard Model ◽  
Extended Hubbard Model ◽  
Pairing State ◽  
Wave Pairing
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