scholarly journals Compton profile of VO2 across the metal-insulator transition: Evidence of a non-Fermi liquid metal

2019 ◽  
Vol 99 (7) ◽  
Author(s):  
Ilkka Kylänpää ◽  
Ye Luo ◽  
Olle Heinonen ◽  
Paul R. C. Kent ◽  
Jaron T. Krogel
Keyword(s):  
Liquid Metal ◽  
Fermi Liquid ◽  
Insulator Transition ◽  
Compton Profile ◽  
Metal Insulator Transition ◽  
Metal Insulator

scholarly journals Quantum-Classical Crossover and Apparent Metal-Insulator Transition in a Weakly Interacting 2D Fermi Liquid

2011 ◽  
Vol 107 (8) ◽  
Author(s):  
Xiaoqing Zhou ◽  
B. Schmidt ◽  
C. Proust ◽  
G. Gervais ◽  
L. N. Pfeiffer ◽  
...  
Keyword(s):  
Fermi Liquid ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Weakly Interacting

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.

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