On the Mott-Hubbard Band in La2CuO4
نویسندگان
چکیده
منابع مشابه
Novel Mott transitions in a nonisotropic two-band Hubbard model.
The Mott transition in a two-band Hubbard model involving subbands of different widths is studied as a function of temperature using dynamical mean field theory combined with exact diagonalization. The phase diagram is shown to exhibit two successive first-order transitions if the full Hund's rule coupling is included. In the absence of spin-flip and pair-exchange terms the lower transition rem...
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I investigate band and Mott insulating states in a two-band Hubbard model, with the aim of understanding the differences between the idealised oneorbital model and the more realistic multi-band case. Using a projection ansatz I show that additional orbitals suppress the metal-insulator transition, leading to a critical coupling of approximately eight times the bare band-width. I also demonstrat...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2013
ISSN: 0375-9687
DOI: 10.1143/ptp.101.381