Thermodynamics of the metal-insulator transition in the extended Hubbard model
Keyword(s):
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.
1991 ◽
pp. 151-168
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2009 ◽
Vol 21
(48)
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pp. 485702
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2001 ◽
Vol 62
(1-2)
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pp. 281-284
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1994 ◽
Vol 6
(28)
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pp. 5439-5454
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1990 ◽
Vol 2
(27)
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pp. 5971-5978
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2016 ◽
Vol 54
(2)
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pp. 237-243
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1996 ◽
Vol 205-207
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pp. 32-42
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